diff --git a/rsconcept/frontend/src/features/rsform/backend/types.ts b/rsconcept/frontend/src/features/rsform/backend/types.ts
index d259ffda..0d281b91 100644
--- a/rsconcept/frontend/src/features/rsform/backend/types.ts
+++ b/rsconcept/frontend/src/features/rsform/backend/types.ts
@@ -4,7 +4,7 @@ import { ILibraryItemReference, ILibraryItemVersioned } from '@/features/library
 
 import { errorMsg } from '@/utils/labels';
 
-import { CstType, IConstituentaMeta, IInheritanceInfo, TermForm } from '../models/rsform';
+import { CstType, IConstituentaMeta, IInheritanceInfo } from '../models/rsform';
 import { IArgumentInfo, ParsingStatus, ValueClass } from '../models/rslang';
 
 /**
@@ -42,17 +42,21 @@ export interface IRSFormUploadDTO {
 /**
  * Represents {@link IConstituenta} data, used in creation process.
  */
-export interface ICstCreateDTO {
-  alias: string;
-  cst_type: CstType;
-  definition_raw: string;
-  term_raw: string;
-  convention: string;
-  definition_formal: string;
-  term_forms: TermForm[];
+export const schemaCstCreate = z.object({
+  cst_type: z.nativeEnum(CstType),
+  alias: z.string().nonempty(errorMsg.requiredField),
+  convention: z.string(),
+  definition_formal: z.string(),
+  definition_raw: z.string(),
+  term_raw: z.string(),
+  term_forms: z.array(z.object({ text: z.string(), tags: z.string() })),
+  insert_after: z.number().nullable()
+});
 
-  insert_after: number | null;
-}
+/**
+ * Represents {@link IConstituenta} data, used in creation process.
+ */
+export type ICstCreateDTO = z.infer<typeof schemaCstCreate>;
 
 /**
  * Represents data response when creating {@link IConstituenta}.
diff --git a/rsconcept/frontend/src/features/rsform/dialogs/DlgCreateCst/DlgCreateCst.tsx b/rsconcept/frontend/src/features/rsform/dialogs/DlgCreateCst/DlgCreateCst.tsx
index 81a6b77c..63fecc0b 100644
--- a/rsconcept/frontend/src/features/rsform/dialogs/DlgCreateCst/DlgCreateCst.tsx
+++ b/rsconcept/frontend/src/features/rsform/dialogs/DlgCreateCst/DlgCreateCst.tsx
@@ -1,54 +1,53 @@
 'use client';
 
-import { useState } from 'react';
+import { FormProvider, useForm, useWatch } from 'react-hook-form';
+import { zodResolver } from '@hookform/resolvers/zod';
 
 import { ModalForm } from '@/components/Modal';
-import usePartialUpdate from '@/hooks/usePartialUpdate';
 import { useDialogsStore } from '@/stores/dialogs';
+import { errorMsg } from '@/utils/labels';
 
-import { ICstCreateDTO } from '../../backend/types';
-import { CstType, IRSForm } from '../../models/rsform';
-import { generateAlias } from '../../models/rsformAPI';
+import { ICstCreateDTO, schemaCstCreate } from '../../backend/types';
+import { useCstCreate } from '../../backend/useCstCreate';
+import { IConstituentaMeta, IRSForm } from '../../models/rsform';
+import { validateNewAlias } from '../../models/rsformAPI';
 
 import FormCreateCst from './FormCreateCst';
 
 export interface DlgCreateCstProps {
-  initial?: ICstCreateDTO;
+  initial: ICstCreateDTO;
   schema: IRSForm;
-  onCreate: (data: ICstCreateDTO) => void;
+  onCreate: (data: IConstituentaMeta) => void;
 }
 
 function DlgCreateCst() {
   const { initial, schema, onCreate } = useDialogsStore(state => state.props as DlgCreateCstProps);
+  const { cstCreate } = useCstCreate();
 
-  const [validated, setValidated] = useState(false);
-  const [cstData, updateCstData] = usePartialUpdate(
-    initial || {
-      cst_type: CstType.BASE,
-      insert_after: null,
-      alias: generateAlias(CstType.BASE, schema),
-      convention: '',
-      definition_formal: '',
-      definition_raw: '',
-      term_raw: '',
-      term_forms: []
-    }
-  );
+  const methods = useForm<ICstCreateDTO>({
+    resolver: zodResolver(schemaCstCreate),
+    defaultValues: { ...initial }
+  });
+  const alias = useWatch({ control: methods.control, name: 'alias' });
+  const cst_type = useWatch({ control: methods.control, name: 'cst_type' });
+  const isValid = alias !== initial.alias && validateNewAlias(alias, cst_type, schema);
 
-  const handleSubmit = () => {
-    onCreate(cstData);
-    return true;
-  };
+  function onSubmit(data: ICstCreateDTO) {
+    return cstCreate({ itemID: schema.id, data }).then(onCreate);
+  }
 
   return (
     <ModalForm
       header='Создание конституенты'
-      canSubmit={validated}
-      onSubmit={handleSubmit}
+      canSubmit={isValid}
+      onSubmit={event => void methods.handleSubmit(onSubmit)(event)}
+      submitInvalidTooltip={errorMsg.aliasInvalid}
       submitText='Создать'
       className='cc-column w-[35rem] max-h-[30rem] py-2 px-6'
     >
-      <FormCreateCst schema={schema} state={cstData} partialUpdate={updateCstData} setValidated={setValidated} />
+      <FormProvider {...methods}>
+        <FormCreateCst schema={schema} />
+      </FormProvider>
     </ModalForm>
   );
 }
diff --git a/rsconcept/frontend/src/features/rsform/dialogs/DlgCreateCst/FormCreateCst.tsx b/rsconcept/frontend/src/features/rsform/dialogs/DlgCreateCst/FormCreateCst.tsx
index ccaa5f0a..1a80e2c7 100644
--- a/rsconcept/frontend/src/features/rsform/dialogs/DlgCreateCst/FormCreateCst.tsx
+++ b/rsconcept/frontend/src/features/rsform/dialogs/DlgCreateCst/FormCreateCst.tsx
@@ -1,6 +1,7 @@
 'use client';
 
-import { useEffect, useState } from 'react';
+import { useState } from 'react';
+import { Controller, useFormContext, useWatch } from 'react-hook-form';
 import clsx from 'clsx';
 
 import { BadgeHelp, HelpTopic } from '@/features/help';
@@ -12,48 +13,45 @@ import { ICstCreateDTO } from '../../backend/types';
 import RSInput from '../../components/RSInput';
 import { SelectCstType } from '../../components/SelectCstType';
 import { CstType, IRSForm } from '../../models/rsform';
-import { generateAlias, isBaseSet, isBasicConcept, isFunctional, validateNewAlias } from '../../models/rsformAPI';
+import { generateAlias, isBaseSet, isBasicConcept, isFunctional } from '../../models/rsformAPI';
 
 interface FormCreateCstProps {
   schema: IRSForm;
-  state: ICstCreateDTO;
-
-  partialUpdate: React.Dispatch<Partial<ICstCreateDTO>>;
-  setValidated?: React.Dispatch<React.SetStateAction<boolean>>;
 }
 
-function FormCreateCst({ schema, state, partialUpdate, setValidated }: FormCreateCstProps) {
+function FormCreateCst({ schema }: FormCreateCstProps) {
+  const {
+    setValue,
+    register,
+    control,
+    formState: { errors }
+  } = useFormContext<ICstCreateDTO>();
   const [forceComment, setForceComment] = useState(false);
 
-  const isBasic = isBasicConcept(state.cst_type);
-  const isElementary = isBaseSet(state.cst_type);
-  const showConvention = !!state.convention || forceComment || isBasic;
-
-  useEffect(() => {
-    setForceComment(false);
-  }, [state.cst_type, partialUpdate, schema]);
-
-  useEffect(() => {
-    if (setValidated) {
-      setValidated(validateNewAlias(state.alias, state.cst_type, schema));
-    }
-  }, [state.alias, state.cst_type, schema, setValidated]);
+  const cst_type = useWatch({ control, name: 'cst_type' });
+  const convention = useWatch({ control, name: 'convention' });
+  const isBasic = isBasicConcept(cst_type);
+  const isElementary = isBaseSet(cst_type);
+  const isFunction = isFunctional(cst_type);
+  const showConvention = !!convention || forceComment || isBasic;
 
   function handleTypeChange(target: CstType) {
-    return partialUpdate({ cst_type: target, alias: generateAlias(target, schema) });
+    setValue('cst_type', target);
+    setValue('alias', generateAlias(target, schema));
+    setForceComment(false);
   }
 
   return (
     <>
       <div className='flex items-center self-center gap-3'>
-        <SelectCstType id='dlg_cst_type' className='w-[16rem]' value={state.cst_type} onChange={handleTypeChange} />
+        <SelectCstType id='dlg_cst_type' className='w-[16rem]' value={cst_type} onChange={handleTypeChange} />
         <TextInput
           id='dlg_cst_alias'
           dense
           label='Имя'
           className='w-[7rem]'
-          value={state.alias}
-          onChange={event => partialUpdate({ alias: event.target.value })}
+          {...register('alias')}
+          error={errors.alias}
         />
         <BadgeHelp
           topic={HelpTopic.CC_CONSTITUENTA}
@@ -69,42 +67,58 @@ function FormCreateCst({ schema, state, partialUpdate, setValidated }: FormCreat
         label='Термин'
         placeholder='Обозначение для текстовых определений'
         className='max-h-[3.6rem]'
-        value={state.term_raw}
-        onChange={event => partialUpdate({ term_raw: event.target.value })}
+        {...register('term_raw')}
+        error={errors.term_raw}
       />
 
-      {!!state.definition_formal || !isElementary ? (
-        <RSInput
-          id='dlg_cst_expression'
-          noTooltip
-          label={
-            state.cst_type === CstType.STRUCTURED
-              ? 'Область определения'
-              : isFunctional(state.cst_type)
-              ? 'Определение функции'
-              : 'Формальное определение'
-          }
-          placeholder={
-            state.cst_type !== CstType.STRUCTURED ? 'Родоструктурное выражение' : 'Типизация родовой структуры'
-          }
-          value={state.definition_formal}
-          onChange={value => partialUpdate({ definition_formal: value })}
-          schema={schema}
-        />
-      ) : null}
+      <Controller
+        control={control}
+        name='definition_formal'
+        render={({ field }) =>
+          !!field.value || !isElementary ? (
+            <RSInput
+              id='dlg_cst_expression'
+              noTooltip
+              label={
+                cst_type === CstType.STRUCTURED
+                  ? 'Область определения'
+                  : isFunction
+                  ? 'Определение функции'
+                  : 'Формальное определение'
+              }
+              placeholder={
+                cst_type !== CstType.STRUCTURED ? 'Родоструктурное выражение' : 'Типизация родовой структуры'
+              }
+              value={field.value}
+              onChange={field.onChange}
+              schema={schema}
+            />
+          ) : (
+            <></>
+          )
+        }
+      />
 
-      {!!state.definition_raw || !isElementary ? (
-        <TextArea
-          id='dlg_cst_definition'
-          spellCheck
-          fitContent
-          label='Текстовое определение'
-          placeholder='Текстовая интерпретация формального выражения'
-          className='max-h-[3.6rem]'
-          value={state.definition_raw}
-          onChange={event => partialUpdate({ definition_raw: event.target.value })}
-        />
-      ) : null}
+      <Controller
+        control={control}
+        name='definition_raw'
+        render={({ field }) =>
+          !!field.value || !isElementary ? (
+            <TextArea
+              id='dlg_cst_definition'
+              spellCheck
+              fitContent
+              label='Текстовое определение'
+              placeholder='Текстовая интерпретация формального выражения'
+              className='max-h-[3.6rem]'
+              value={field.value}
+              onChange={field.onChange}
+            />
+          ) : (
+            <></>
+          )
+        }
+      />
 
       {!showConvention ? (
         <button
@@ -124,8 +138,7 @@ function FormCreateCst({ schema, state, partialUpdate, setValidated }: FormCreat
           label={isBasic ? 'Конвенция' : 'Комментарий'}
           placeholder={isBasic ? 'Договоренность об интерпретации' : 'Пояснение разработчика'}
           className='max-h-[5.4rem]'
-          value={state.convention}
-          onChange={event => partialUpdate({ convention: event.target.value })}
+          {...register('convention')}
         />
       )}
     </>
diff --git a/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/DlgCstTemplate.tsx b/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/DlgCstTemplate.tsx
index cf90eb4e..b8097e7b 100644
--- a/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/DlgCstTemplate.tsx
+++ b/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/DlgCstTemplate.tsx
@@ -1,6 +1,8 @@
 'use client';
 
-import { Suspense, useEffect, useState } from 'react';
+import { Suspense, useState } from 'react';
+import { FormProvider, useForm, useWatch } from 'react-hook-form';
+import { zodResolver } from '@hookform/resolvers/zod';
 import clsx from 'clsx';
 
 import { HelpTopic } from '@/features/help';
@@ -8,23 +10,21 @@ import { HelpTopic } from '@/features/help';
 import { Loader } from '@/components/Loader';
 import { ModalForm } from '@/components/Modal';
 import { TabLabel, TabList, TabPanel, Tabs } from '@/components/Tabs';
-import usePartialUpdate from '@/hooks/usePartialUpdate';
 import { useDialogsStore } from '@/stores/dialogs';
-import { promptText } from '@/utils/labels';
 
-import { ICstCreateDTO } from '../../backend/types';
-import { useRSForm } from '../../backend/useRSForm';
-import { CstType, IRSForm } from '../../models/rsform';
+import { ICstCreateDTO, schemaCstCreate } from '../../backend/types';
+import { useCstCreate } from '../../backend/useCstCreate';
+import { CstType, IConstituentaMeta, IRSForm } from '../../models/rsform';
 import { generateAlias, validateNewAlias } from '../../models/rsformAPI';
-import { inferTemplatedType, substituteTemplateArgs } from '../../models/rslangAPI';
 import FormCreateCst from '../DlgCreateCst/FormCreateCst';
 
-import TabArguments, { IArgumentsState } from './TabArguments';
-import TabTemplate, { ITemplateState } from './TabTemplate';
+import TabArguments from './TabArguments';
+import TabTemplate from './TabTemplate';
+import { TemplateState } from './TemplateContext';
 
 export interface DlgCstTemplateProps {
   schema: IRSForm;
-  onCreate: (data: ICstCreateDTO) => void;
+  onCreate: (data: IConstituentaMeta) => void;
   insertAfter?: number;
 }
 
@@ -36,98 +36,38 @@ export enum TabID {
 
 function DlgCstTemplate() {
   const { schema, onCreate, insertAfter } = useDialogsStore(state => state.props as DlgCstTemplateProps);
+  const { cstCreate } = useCstCreate();
+
+  const methods = useForm<ICstCreateDTO>({
+    resolver: zodResolver(schemaCstCreate),
+    defaultValues: {
+      cst_type: CstType.TERM,
+      insert_after: insertAfter ?? null,
+      alias: generateAlias(CstType.TERM, schema),
+      convention: '',
+      definition_formal: '',
+      definition_raw: '',
+      term_raw: '',
+      term_forms: []
+    }
+  });
+  const alias = useWatch({ control: methods.control, name: 'alias' });
+  const cst_type = useWatch({ control: methods.control, name: 'cst_type' });
+  const isValid = validateNewAlias(alias, cst_type, schema);
+
   const [activeTab, setActiveTab] = useState(TabID.TEMPLATE);
 
-  const [template, updateTemplate] = usePartialUpdate<ITemplateState>({});
-  const { schema: templateSchema } = useRSForm({ itemID: template.templateID });
-  const [substitutes, updateSubstitutes] = usePartialUpdate<IArgumentsState>({
-    definition: '',
-    arguments: []
-  });
-  const [constituenta, updateConstituenta] = usePartialUpdate<ICstCreateDTO>({
-    cst_type: CstType.TERM,
-    insert_after: insertAfter ?? null,
-    alias: generateAlias(CstType.TERM, schema),
-    convention: '',
-    definition_formal: '',
-    definition_raw: '',
-    term_raw: '',
-    term_forms: []
-  });
-
-  const [validated, setValidated] = useState(false);
-
-  function handleSubmit() {
-    onCreate(constituenta);
-    return true;
+  function onSubmit(data: ICstCreateDTO) {
+    return cstCreate({ itemID: schema.id, data }).then(onCreate);
   }
 
-  function handlePrompt(): boolean {
-    const definedSomeArgs = substitutes.arguments.some(arg => !!arg.value);
-    if (!definedSomeArgs && !window.confirm(promptText.templateUndefined)) {
-      return false;
-    }
-    return true;
-  }
-
-  useEffect(() => {
-    if (!template.prototype) {
-      updateConstituenta({
-        definition_raw: '',
-        definition_formal: '',
-        term_raw: ''
-      });
-      updateSubstitutes({
-        definition: '',
-        arguments: []
-      });
-    } else {
-      updateConstituenta({
-        cst_type: template.prototype.cst_type,
-        alias: generateAlias(template.prototype.cst_type, schema),
-        definition_raw: template.prototype.definition_raw,
-        definition_formal: template.prototype.definition_formal,
-        term_raw: template.prototype.term_raw
-      });
-      updateSubstitutes({
-        definition: template.prototype.definition_formal,
-        arguments: template.prototype.parse.args.map(arg => ({
-          alias: arg.alias,
-          typification: arg.typification,
-          value: ''
-        }))
-      });
-    }
-  }, [template.prototype, updateConstituenta, updateSubstitutes, schema]);
-
-  useEffect(() => {
-    if (substitutes.arguments.length === 0 || !template.prototype) {
-      return;
-    }
-    const definition = substituteTemplateArgs(template.prototype.definition_formal, substitutes.arguments);
-    const type = inferTemplatedType(template.prototype.cst_type, substitutes.arguments);
-    updateConstituenta({
-      cst_type: type,
-      alias: generateAlias(type, schema),
-      definition_formal: definition
-    });
-    updateSubstitutes({
-      definition: definition
-    });
-  }, [substitutes.arguments, template.prototype, updateConstituenta, updateSubstitutes, schema]);
-
-  useEffect(() => {
-    setValidated(!!template.prototype && validateNewAlias(constituenta.alias, constituenta.cst_type, schema));
-  }, [constituenta.alias, constituenta.cst_type, schema, template.prototype]);
-
   return (
     <ModalForm
       header='Создание конституенты из шаблона'
       submitText='Создать'
       className='w-[43rem] h-[35rem] px-6'
-      canSubmit={validated}
-      beforeSubmit={handlePrompt}
-      onSubmit={handleSubmit}
+      canSubmit={isValid}
+      onSubmit={event => void methods.handleSubmit(onSubmit)(event)}
       helpTopic={HelpTopic.RSL_TEMPLATES}
     >
       <Tabs
@@ -142,21 +82,25 @@ function DlgCstTemplate() {
           <TabLabel label='Конституента' title='Редактирование конституенты' className='w-[8rem]' />
         </TabList>
 
-        <TabPanel>
-          <Suspense fallback={<Loader />}>
-            <TabTemplate state={template} partialUpdate={updateTemplate} templateSchema={templateSchema} />
-          </Suspense>
-        </TabPanel>
+        <FormProvider {...methods}>
+          <TemplateState>
+            <TabPanel>
+              <Suspense fallback={<Loader />}>
+                <TabTemplate />
+              </Suspense>
+            </TabPanel>
 
-        <TabPanel>
-          <TabArguments schema={schema} state={substitutes} partialUpdate={updateSubstitutes} />
-        </TabPanel>
+            <TabPanel>
+              <TabArguments />
+            </TabPanel>
 
-        <TabPanel>
-          <div className='cc-fade-in cc-column'>
-            <FormCreateCst state={constituenta} partialUpdate={updateConstituenta} schema={schema} />
-          </div>
-        </TabPanel>
+            <TabPanel>
+              <div className='cc-fade-in cc-column'>
+                <FormCreateCst schema={schema} />
+              </div>
+            </TabPanel>
+          </TemplateState>
+        </FormProvider>
       </Tabs>
     </ModalForm>
   );
diff --git a/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/TabArguments.tsx b/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/TabArguments.tsx
index d13ea82d..540417c7 100644
--- a/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/TabArguments.tsx
+++ b/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/TabArguments.tsx
@@ -1,6 +1,7 @@
 'use client';
 
-import { useEffect, useState } from 'react';
+import { useState } from 'react';
+import { useFormContext, useWatch } from 'react-hook-form';
 import { createColumnHelper } from '@tanstack/react-table';
 import clsx from 'clsx';
 
@@ -8,37 +9,32 @@ import { MiniButton } from '@/components/Control';
 import DataTable, { IConditionalStyle } from '@/components/DataTable';
 import { IconAccept, IconRemove, IconReset } from '@/components/Icons';
 import { NoData } from '@/components/View';
+import { useDialogsStore } from '@/stores/dialogs';
 import { APP_COLORS } from '@/styling/colors';
 
+import { ICstCreateDTO } from '../../backend/types';
 import { PickConstituenta } from '../../components/PickConstituenta';
 import RSInput from '../../components/RSInput';
-import { IConstituenta, IRSForm } from '../../models/rsform';
+import { IConstituenta } from '../../models/rsform';
 import { IArgumentValue } from '../../models/rslang';
 
-interface TabArgumentsProps {
-  state: IArgumentsState;
-  schema: IRSForm;
-  partialUpdate: React.Dispatch<Partial<IArgumentsState>>;
-}
-
-export interface IArgumentsState {
-  arguments: IArgumentValue[];
-  definition: string;
-}
+import { DlgCstTemplateProps } from './DlgCstTemplate';
+import { useTemplateContext } from './TemplateContext';
 
 const argumentsHelper = createColumnHelper<IArgumentValue>();
 
-function TabArguments({ state, schema, partialUpdate }: TabArgumentsProps) {
-  const [selectedCst, setSelectedCst] = useState<IConstituenta | undefined>(undefined);
-  const [selectedArgument, setSelectedArgument] = useState<IArgumentValue | undefined>(undefined);
-  const [argumentValue, setArgumentValue] = useState('');
-  const isModified = selectedArgument && argumentValue !== selectedArgument.value;
+function TabArguments() {
+  const { schema } = useDialogsStore(state => state.props as DlgCstTemplateProps);
+  const { control } = useFormContext<ICstCreateDTO>();
+  const { args, onChangeArguments } = useTemplateContext();
+  const definition = useWatch({ control, name: 'definition_formal' });
 
-  useEffect(() => {
-    if (!selectedArgument && state.arguments.length > 0) {
-      setSelectedArgument(state.arguments[0]);
-    }
-  }, [state.arguments, selectedArgument]);
+  const [selectedCst, setSelectedCst] = useState<IConstituenta | undefined>(undefined);
+  const [selectedArgument, setSelectedArgument] = useState<IArgumentValue | undefined>(
+    args.length > 0 ? args[0] : undefined
+  );
+
+  const [argumentValue, setArgumentValue] = useState('');
 
   function handleSelectArgument(arg: IArgumentValue) {
     setSelectedArgument(arg);
@@ -54,9 +50,7 @@ function TabArguments({ state, schema, partialUpdate }: TabArgumentsProps) {
 
   function handleClearArgument(target: IArgumentValue) {
     const newArg = { ...target, value: '' };
-    partialUpdate({
-      arguments: state.arguments.map(arg => (arg.alias !== target.alias ? arg : newArg))
-    });
+    onChangeArguments(args.map(arg => (arg.alias !== target.alias ? arg : newArg)));
     setSelectedArgument(newArg);
   }
 
@@ -64,11 +58,9 @@ function TabArguments({ state, schema, partialUpdate }: TabArgumentsProps) {
     setArgumentValue(selectedArgument?.value ?? '');
   }
 
-  function handleAssignArgument(target: IArgumentValue, value: string) {
-    const newArg = { ...target, value: value };
-    partialUpdate({
-      arguments: state.arguments.map(arg => (arg.alias !== target.alias ? arg : newArg))
-    });
+  function handleAssignArgument(target: IArgumentValue, argValue: string) {
+    const newArg = { ...target, value: argValue };
+    onChangeArguments(args.map(arg => (arg.alias !== target.alias ? arg : newArg)));
     setSelectedArgument(newArg);
   }
 
@@ -139,7 +131,7 @@ function TabArguments({ state, schema, partialUpdate }: TabArgumentsProps) {
           'border',
           'select-none'
         )}
-        data={state.arguments}
+        data={args}
         columns={columns}
         conditionalRowStyles={conditionalRowStyles}
         noDataComponent={<NoData className='min-h-[3.6rem]'>Аргументы отсутствуют</NoData>}
@@ -179,7 +171,6 @@ function TabArguments({ state, schema, partialUpdate }: TabArgumentsProps) {
             title='Очистить поле'
             noHover
             className='py-0'
-            disabled={!isModified}
             onClick={handleReset}
             icon={<IconReset size='1.5rem' className='icon-primary' />}
           />
@@ -201,7 +192,7 @@ function TabArguments({ state, schema, partialUpdate }: TabArgumentsProps) {
         placeholder='Итоговое определение'
         className='mt-[1.2rem]'
         height='5.1rem'
-        value={state.definition}
+        value={definition}
       />
     </div>
   );
diff --git a/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/TabTemplate.tsx b/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/TabTemplate.tsx
index 200ec927..0fed45d4 100644
--- a/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/TabTemplate.tsx
+++ b/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/TabTemplate.tsx
@@ -1,36 +1,44 @@
 'use client';
 
-import { Dispatch, useEffect, useState } from 'react';
-
 import { useTemplatesSuspense } from '@/features/library';
 
 import { SelectSingle, TextArea } from '@/components/Input';
 
+import { useRSForm } from '../../backend/useRSForm';
 import { PickConstituenta } from '../../components/PickConstituenta';
 import RSInput from '../../components/RSInput';
-import { CATEGORY_CST_TYPE, IConstituenta, IRSForm } from '../../models/rsform';
+import { CATEGORY_CST_TYPE } from '../../models/rsform';
 import { applyFilterCategory } from '../../models/rsformAPI';
 
-export interface ITemplateState {
-  templateID?: number;
-  prototype?: IConstituenta;
-  filterCategory?: IConstituenta;
-}
+import { useTemplateContext } from './TemplateContext';
 
-interface TabTemplateProps {
-  state: ITemplateState;
-  partialUpdate: Dispatch<Partial<ITemplateState>>;
-  templateSchema?: IRSForm;
-}
+function TabTemplate() {
+  const {
+    templateID, //
+    filterCategory,
+    prototype,
+    onChangePrototype,
+    onChangeTemplateID,
+    onChangeFilterCategory
+  } = useTemplateContext();
 
-function TabTemplate({ state, partialUpdate, templateSchema }: TabTemplateProps) {
   const { templates } = useTemplatesSuspense();
+  const { schema: templateSchema } = useRSForm({ itemID: templateID });
 
-  const [filteredData, setFilteredData] = useState<IConstituenta[]>([]);
+  if (!templateID) {
+    onChangeTemplateID(templates[0].id);
+    return null;
+  }
 
-  const prototypeInfo = !state.prototype
+  const filteredData = !templateSchema
+    ? []
+    : !filterCategory
+    ? templateSchema.items
+    : applyFilterCategory(filterCategory, templateSchema);
+
+  const prototypeInfo = !prototype
     ? ''
-    : `${state.prototype?.term_raw}${state.prototype?.definition_raw ? ` — ${state.prototype?.definition_raw}` : ''}`;
+    : `${prototype?.term_raw}${prototype?.definition_raw ? ` — ${prototype?.definition_raw}` : ''}`;
 
   const templateSelector = templates.map(template => ({
     value: template.id,
@@ -46,23 +54,6 @@ function TabTemplate({ state, partialUpdate, templateSchema }: TabTemplateProps)
           label: cst.term_raw
         }));
 
-  useEffect(() => {
-    if (templates.length > 0 && !state.templateID) {
-      partialUpdate({ templateID: templates[0].id });
-    }
-  }, [templates, state.templateID, partialUpdate]);
-
-  useEffect(() => {
-    if (!templateSchema) {
-      return;
-    }
-    let data = templateSchema.items;
-    if (state.filterCategory) {
-      data = applyFilterCategory(state.filterCategory, templateSchema);
-    }
-    setFilteredData(data);
-  }, [state.filterCategory, templateSchema]);
-
   return (
     <div className='cc-fade-in'>
       <div className='flex border-t border-x rounded-t-md clr-input'>
@@ -71,12 +62,8 @@ function TabTemplate({ state, partialUpdate, templateSchema }: TabTemplateProps)
           placeholder='Источник'
           className='w-[12rem]'
           options={templateSelector}
-          value={
-            state.templateID
-              ? { value: state.templateID, label: templates.find(item => item.id == state.templateID)!.title }
-              : null
-          }
-          onChange={data => partialUpdate({ templateID: data ? data.value : undefined })}
+          value={templateID ? { value: templateID, label: templates.find(item => item.id == templateID)!.title } : null}
+          onChange={data => onChangeTemplateID(data ? data.value : undefined)}
         />
         <SelectSingle
           noBorder
@@ -85,24 +72,22 @@ function TabTemplate({ state, partialUpdate, templateSchema }: TabTemplateProps)
           className='flex-grow ml-1 border-none'
           options={categorySelector}
           value={
-            state.filterCategory && templateSchema
+            filterCategory && templateSchema
               ? {
-                  value: state.filterCategory.id,
-                  label: state.filterCategory.term_raw
+                  value: filterCategory.id,
+                  label: filterCategory.term_raw
                 }
               : null
           }
-          onChange={data =>
-            partialUpdate({ filterCategory: data ? templateSchema?.cstByID.get(data?.value) : undefined })
-          }
+          onChange={data => onChangeFilterCategory(data ? templateSchema?.cstByID.get(data?.value) : undefined)}
           isClearable
         />
       </div>
       <PickConstituenta
         id='dlg_template_picker'
-        value={state.prototype}
+        value={prototype}
         items={filteredData}
-        onChange={cst => partialUpdate({ prototype: cst })}
+        onChange={onChangePrototype}
         className='rounded-t-none'
         rows={8}
       />
@@ -121,7 +106,7 @@ function TabTemplate({ state, partialUpdate, templateSchema }: TabTemplateProps)
         disabled
         placeholder='Выберите шаблон из списка'
         height='5.1rem'
-        value={state.prototype?.definition_formal}
+        value={prototype?.definition_formal}
       />
     </div>
   );
diff --git a/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/TemplateContext.tsx b/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/TemplateContext.tsx
new file mode 100644
index 00000000..9f2d69dc
--- /dev/null
+++ b/rsconcept/frontend/src/features/rsform/dialogs/DlgCstTemplate/TemplateContext.tsx
@@ -0,0 +1,95 @@
+'use client';
+
+import { createContext, useContext, useState } from 'react';
+import { useFormContext } from 'react-hook-form';
+
+import { useDialogsStore } from '@/stores/dialogs';
+
+import { ICstCreateDTO } from '../../backend/types';
+import { IConstituenta } from '../../models/rsform';
+import { generateAlias } from '../../models/rsformAPI';
+import { IArgumentValue } from '../../models/rslang';
+import { inferTemplatedType, substituteTemplateArgs } from '../../models/rslangAPI';
+
+import { DlgCstTemplateProps } from './DlgCstTemplate';
+
+export interface ITemplateContext {
+  args: IArgumentValue[];
+  prototype?: IConstituenta;
+  templateID?: number;
+  filterCategory?: IConstituenta;
+
+  onChangeArguments: (newArgs: IArgumentValue[]) => void;
+  onChangePrototype: (newPrototype: IConstituenta) => void;
+  onChangeTemplateID: (newTemplateID: number | undefined) => void;
+  onChangeFilterCategory: (newFilterCategory: IConstituenta | undefined) => void;
+}
+
+const TemplateContext = createContext<ITemplateContext | null>(null);
+export const useTemplateContext = () => {
+  const context = useContext(TemplateContext);
+  if (context === null) {
+    throw new Error('useTemplateContext has to be used within <TemplateState>');
+  }
+  return context;
+};
+
+export const TemplateState = ({ children }: React.PropsWithChildren) => {
+  const { schema } = useDialogsStore(state => state.props as DlgCstTemplateProps);
+  const { setValue } = useFormContext<ICstCreateDTO>();
+  const [templateID, setTemplateID] = useState<number | undefined>(undefined);
+  const [args, setArguments] = useState<IArgumentValue[]>([]);
+  const [prototype, setPrototype] = useState<IConstituenta | undefined>(undefined);
+  const [filterCategory, setFilterCategory] = useState<IConstituenta | undefined>(undefined);
+
+  function onChangeArguments(newArgs: IArgumentValue[]) {
+    setArguments(newArgs);
+    if (newArgs.length === 0 || !prototype) {
+      return;
+    }
+
+    const newType = inferTemplatedType(prototype.cst_type, newArgs);
+    setValue('definition_formal', substituteTemplateArgs(prototype.definition_formal, newArgs));
+    setValue('cst_type', newType);
+    setValue('alias', generateAlias(newType, schema));
+  }
+
+  function onChangePrototype(newPrototype: IConstituenta) {
+    setPrototype(newPrototype);
+    setArguments(
+      newPrototype.parse.args.map(arg => ({
+        alias: arg.alias,
+        typification: arg.typification,
+        value: ''
+      }))
+    );
+    setValue('cst_type', newPrototype.cst_type);
+    setValue('alias', generateAlias(newPrototype.cst_type, schema));
+    setValue('definition_formal', newPrototype.definition_formal);
+    setValue('term_raw', newPrototype.term_raw);
+    setValue('definition_raw', newPrototype.definition_raw);
+  }
+
+  function onChangeTemplateID(newTemplateID: number | undefined) {
+    setTemplateID(newTemplateID);
+    setPrototype(undefined);
+    setArguments([]);
+  }
+
+  return (
+    <TemplateContext
+      value={{
+        templateID,
+        prototype,
+        filterCategory,
+        args,
+        onChangeArguments,
+        onChangePrototype,
+        onChangeFilterCategory: setFilterCategory,
+        onChangeTemplateID
+      }}
+    >
+      {children}
+    </TemplateContext>
+  );
+};
diff --git a/rsconcept/frontend/src/features/rsform/pages/RSFormPage/RSEditContext.tsx b/rsconcept/frontend/src/features/rsform/pages/RSFormPage/RSEditContext.tsx
index 4ffa9f47..ca1258c6 100644
--- a/rsconcept/frontend/src/features/rsform/pages/RSFormPage/RSEditContext.tsx
+++ b/rsconcept/frontend/src/features/rsform/pages/RSFormPage/RSEditContext.tsx
@@ -18,7 +18,7 @@ import { ICstCreateDTO } from '../../backend/types';
 import { useCstCreate } from '../../backend/useCstCreate';
 import { useCstMove } from '../../backend/useCstMove';
 import { useRSFormSuspense } from '../../backend/useRSForm';
-import { CstType, IConstituenta, IRSForm } from '../../models/rsform';
+import { CstType, IConstituenta, IConstituentaMeta, IRSForm } from '../../models/rsform';
 import { generateAlias } from '../../models/rsformAPI';
 
 export enum RSTabID {
@@ -177,24 +177,21 @@ export const RSEditState = ({
     });
   }
 
-  function handleCreateCst(data: ICstCreateDTO) {
-    data.alias = data.alias || generateAlias(data.cst_type, schema);
-    void cstCreate({ itemID: itemID, data }).then(newCst => {
-      setSelected([newCst.id]);
-      navigateRSForm({ tab: activeTab, activeID: newCst.id });
-      if (activeTab === RSTabID.CST_LIST) {
-        setTimeout(() => {
-          const element = document.getElementById(`${prefixes.cst_list}${newCst.id}`);
-          if (element) {
-            element.scrollIntoView({
-              behavior: 'smooth',
-              block: 'nearest',
-              inline: 'end'
-            });
-          }
-        }, PARAMETER.refreshTimeout);
-      }
-    });
+  function onCreateCst(newCst: IConstituentaMeta) {
+    setSelected([newCst.id]);
+    navigateRSForm({ tab: activeTab, activeID: newCst.id });
+    if (activeTab === RSTabID.CST_LIST) {
+      setTimeout(() => {
+        const element = document.getElementById(`${prefixes.cst_list}${newCst.id}`);
+        if (element) {
+          element.scrollIntoView({
+            behavior: 'smooth',
+            block: 'nearest',
+            inline: 'end'
+          });
+        }
+      }, PARAMETER.refreshTimeout);
+    }
   }
 
   function moveUp() {
@@ -258,9 +255,9 @@ export const RSEditState = ({
       term_forms: []
     };
     if (skipDialog) {
-      handleCreateCst(data);
+      void cstCreate({ itemID: schema.id, data }).then(onCreateCst);
     } else {
-      showCreateCst({ schema: schema, onCreate: handleCreateCst, initial: data });
+      showCreateCst({ schema: schema, onCreate: onCreateCst, initial: data });
     }
   }
 
@@ -268,17 +265,19 @@ export const RSEditState = ({
     if (!activeCst) {
       return;
     }
-    const data: ICstCreateDTO = {
-      insert_after: activeCst.id,
-      cst_type: activeCst.cst_type,
-      alias: generateAlias(activeCst.cst_type, schema),
-      term_raw: activeCst.term_raw,
-      definition_formal: activeCst.definition_formal,
-      definition_raw: activeCst.definition_raw,
-      convention: activeCst.convention,
-      term_forms: activeCst.term_forms
-    };
-    handleCreateCst(data);
+    void cstCreate({
+      itemID: schema.id,
+      data: {
+        insert_after: activeCst.id,
+        cst_type: activeCst.cst_type,
+        alias: generateAlias(activeCst.cst_type, schema),
+        term_raw: activeCst.term_raw,
+        definition_formal: activeCst.definition_formal,
+        definition_raw: activeCst.definition_raw,
+        convention: activeCst.convention,
+        term_forms: activeCst.term_forms
+      }
+    }).then(onCreateCst);
   }
 
   function promptDeleteCst() {
@@ -299,11 +298,12 @@ export const RSEditState = ({
       }
     });
   }
+
   function promptTemplate() {
     if (isModified && !promptUnsaved()) {
       return;
     }
-    showCstTemplate({ schema: schema, onCreate: handleCreateCst, insertAfter: activeCst?.id });
+    showCstTemplate({ schema: schema, onCreate: onCreateCst, insertAfter: activeCst?.id });
   }
 
   return (
diff --git a/rsconcept/frontend/src/utils/labels.ts b/rsconcept/frontend/src/utils/labels.ts
index 5e6c2b3c..0dd8c57e 100644
--- a/rsconcept/frontend/src/utils/labels.ts
+++ b/rsconcept/frontend/src/utils/labels.ts
@@ -140,7 +140,8 @@ export const errorMsg = {
   loginFormat: 'Имя пользователя должно содержать только буквы и цифры',
   invalidLocation: 'Некорректный формат пути',
   versionTaken: 'Версия с таким шифром уже существует',
-  emptySubstitutions: 'Выберите хотя бы одно отождествление'
+  emptySubstitutions: 'Выберите хотя бы одно отождествление',
+  aliasInvalid: 'Введите незанятое имя, соответствующее типу'
 };
 
 /**
@@ -162,7 +163,6 @@ export const promptText = {
     'Внимание!!\nУдаление операционной схемы приведет к удалению всех операций и собственных концептуальных схем.\nДанное действие нельзя отменить.\nВы уверены, что хотите удалить данную ОСС?',
   generateWordforms: 'Данное действие приведет к перезаписи словоформ при совпадении граммем. Продолжить?',
   restoreArchive: 'При восстановлении архивной версии актуальная схему будет заменена. Продолжить?',
-  templateUndefined: 'Вы уверены, что хотите создать шаблонную конституенту не фиксируя аргументы?',
   ownerChange:
     'Вы уверены, что хотите изменить владельца? Вы потеряете право управления данной схемой. Данное действие отменить нельзя'
 };