diff --git a/apps/api/documents/api.js b/apps/api/documents/api.js
index 03b6ec35a3..f45ea381f4 100644
--- a/apps/api/documents/api.js
+++ b/apps/api/documents/api.js
@@ -55,8 +55,7 @@
                          view: ["Group1", ""] // current user can view comments made by users from Group1 and users without a group.
                          edit: ["Group1", ""] // current user can edit comments made by users from Group1 and users without a group.
                          remove: ["Group1", ""] // current user can remove comments made by users from Group1 and users without a group.
-                    },
-                    changeCoAuthoring: true // can change co-authoring mode
+                    }
                 }
             },
             editorConfig: {
@@ -135,7 +134,7 @@
                     anonymous: { // set name for anonymous user
                         request: bool (default: true), // enable set name
                         label: string (default: "Guest") // postfix for user name
-                    }
+                    },
                     chat: true,
                     comments: true,
                     zoom: 100,
@@ -162,9 +161,12 @@
                     plugins: true // can run plugins in document
                     macrosMode: 'warn' // warn about automatic macros, 'enable', 'disable', 'warn',
                     trackChanges: undefined // true/false - open editor with track changes mode on/off,
-                    hideRulers: false, // hide or show rulers on first loading (presentation or document editor),
-                    modeCoAuthoring: <coauthoring mode>, 'fast' (default) or 'strict'. if 'fast' and 'autosave'=false -> set 'autosave'=true
+                    hideRulers: false // hide or show rulers on first loading (presentation or document editor)
                 },
+                 coEditing: {
+                     mode: 'fast', // <coauthoring mode>, 'fast' or 'strict'. if 'fast' and 'customization.autosave'=false -> set 'customization.autosave'=true
+                     change: true, // can change co-authoring mode
+                 },
                 plugins: {
                     autostart: ['asc.{FFE1F462-1EA2-4391-990D-4CC84940B754}'],
                     pluginsData: [
diff --git a/apps/documenteditor/main/app/controller/Main.js b/apps/documenteditor/main/app/controller/Main.js
index e08c0102df..d8adfa37d4 100644
--- a/apps/documenteditor/main/app/controller/Main.js
+++ b/apps/documenteditor/main/app/controller/Main.js
@@ -1357,7 +1357,7 @@ define([
                     Common.NotificationCenter.on('comments:cleardummy', _.bind(this.onClearDummyComment, this));
                     Common.NotificationCenter.on('comments:showdummy', _.bind(this.onShowDummyComment, this));
 
-                this.appOptions.canChangeCoAuthoring = this.appOptions.isEdit && this.appOptions.canCoAuthoring && (this.permissions.changeCoAuthoring!==false);
+                this.appOptions.canChangeCoAuthoring = this.appOptions.isEdit && this.appOptions.canCoAuthoring && !(typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.change===false);
 
                 this.loadCoAuthSettings();
                 this.applyModeCommonElements();
@@ -1381,15 +1381,15 @@ define([
                     autosave = 1,
                     value;
                 if (this.appOptions.isEdit && !this.appOptions.isOffline && this.appOptions.canCoAuthoring) {
-                    if (!this.appOptions.canChangeCoAuthoring) { //can't change co-auth. mode. Use customization.modeCoAuthoring or 'fast' by default
-                        value = (this.appOptions.customization && this.appOptions.customization.modeCoAuthoring!==undefined) ? (this.appOptions.customization.modeCoAuthoring==='strict' ? 0 : 1) : null;
+                    if (!this.appOptions.canChangeCoAuthoring) { //can't change co-auth. mode. Use coEditing.mode or 'fast' by default
+                        value = (this.editorConfig.coEditing && this.editorConfig.coEditing.mode!==undefined) ? (this.editorConfig.coEditing.mode==='strict' ? 0 : 1) : null;
                         if (value===null && this.appOptions.customization && this.appOptions.customization.autosave===false) {
-                            value = 0; // use customization.autosave only when modeCoAuthoring are null
+                            value = 0; // use customization.autosave only when coEditing.mode is null
                         }
                     } else {
                         value = Common.localStorage.getItem("de-settings-coauthmode");
                         if (value===null) {
-                            value = (this.appOptions.customization && this.appOptions.customization.modeCoAuthoring!==undefined) ? (this.appOptions.customization.modeCoAuthoring==='strict' ? 0 : 1) : null;
+                            value = (this.editorConfig.coEditing && this.editorConfig.coEditing.mode!==undefined) ? (this.editorConfig.coEditing.mode==='strict' ? 0 : 1) : null;
                             if (value===null && !Common.localStorage.itemExists("de-settings-autosave") &&
                                 this.appOptions.customization && this.appOptions.customization.autosave===false) {
                                 value = 0; // use customization.autosave only when de-settings-coauthmode and de-settings-autosave are null
diff --git a/apps/presentationeditor/main/app/controller/Main.js b/apps/presentationeditor/main/app/controller/Main.js
index ee0998ca7a..3de804f4a3 100644
--- a/apps/presentationeditor/main/app/controller/Main.js
+++ b/apps/presentationeditor/main/app/controller/Main.js
@@ -1065,7 +1065,7 @@ define([
                 this.appOptions.canBrandingExt = params.asc_getCanBranding() && (typeof this.editorConfig.customization == 'object' || this.editorConfig.plugins);
                 this.getApplication().getController('Common.Controllers.Plugins').setMode(this.appOptions);
 
-                this.appOptions.canChangeCoAuthoring = this.appOptions.isEdit && this.appOptions.canCoAuthoring && (this.permissions.changeCoAuthoring!==false);
+                this.appOptions.canChangeCoAuthoring = this.appOptions.isEdit && this.appOptions.canCoAuthoring && !(typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.change===false);
 
                 this.loadCoAuthSettings();
                 this.applyModeCommonElements();
@@ -1089,15 +1089,15 @@ define([
                     value;
 
                 if (this.appOptions.isEdit && !this.appOptions.isOffline && this.appOptions.canCoAuthoring) {
-                    if (!this.appOptions.canChangeCoAuthoring) { //can't change co-auth. mode. Use customization.modeCoAuthoring or 'fast' by default
-                        value = (this.appOptions.customization && this.appOptions.customization.modeCoAuthoring!==undefined) ? (this.appOptions.customization.modeCoAuthoring==='strict' ? 0 : 1) : null;
+                    if (!this.appOptions.canChangeCoAuthoring) { //can't change co-auth. mode. Use coEditing.mode or 'fast' by default
+                        value = (this.editorConfig.coEditing && this.editorConfig.coEditing.mode!==undefined) ? (this.editorConfig.coEditing.mode==='strict' ? 0 : 1) : null;
                         if (value===null && this.appOptions.customization && this.appOptions.customization.autosave===false) {
-                            value = 0; // use customization.autosave only when modeCoAuthoring are null
+                            value = 0; // use customization.autosave only when coEditing.mode is null
                         }
                     } else {
                         value = Common.localStorage.getItem("pe-settings-coauthmode");
                         if (value===null) {
-                            value = (this.appOptions.customization && this.appOptions.customization.modeCoAuthoring!==undefined) ? (this.appOptions.customization.modeCoAuthoring==='strict' ? 0 : 1) : null;
+                            value = (this.editorConfig.coEditing && this.editorConfig.coEditing.mode!==undefined) ? (this.editorConfig.coEditing.mode==='strict' ? 0 : 1) : null;
                             if (value===null && !Common.localStorage.itemExists("pe-settings-autosave") &&
                                 this.appOptions.customization && this.appOptions.customization.autosave===false) {
                                 value = 0; // use customization.autosave only when de-settings-coauthmode and pe-settings-autosave are null
diff --git a/apps/spreadsheeteditor/main/app/controller/Main.js b/apps/spreadsheeteditor/main/app/controller/Main.js
index 62127299dc..e0c15f5323 100644
--- a/apps/spreadsheeteditor/main/app/controller/Main.js
+++ b/apps/spreadsheeteditor/main/app/controller/Main.js
@@ -1124,7 +1124,8 @@ define([
                 this.appOptions.canHelp        = !((typeof (this.editorConfig.customization) == 'object') && this.editorConfig.customization.help===false);
                 this.appOptions.isRestrictedEdit = !this.appOptions.isEdit && this.appOptions.canComments;
 
-                this.appOptions.canChangeCoAuthoring = this.appOptions.isEdit && !(this.appOptions.isEditDiagram || this.appOptions.isEditMailMerge) && this.appOptions.canCoAuthoring && (this.permissions.changeCoAuthoring!==false);
+                this.appOptions.canChangeCoAuthoring = this.appOptions.isEdit && !(this.appOptions.isEditDiagram || this.appOptions.isEditMailMerge) && this.appOptions.canCoAuthoring &&
+                                                        !(typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.change===false);
 
                 if (!this.appOptions.isEditDiagram && !this.appOptions.isEditMailMerge) {
                     this.appOptions.canBrandingExt = params.asc_getCanBranding() && (typeof this.editorConfig.customization == 'object' || this.editorConfig.plugins);
@@ -1153,15 +1154,15 @@ define([
                     value;
 
                 if (this.appOptions.isEdit && !this.appOptions.isOffline && this.appOptions.canCoAuthoring) {
-                    if (!this.appOptions.canChangeCoAuthoring) { //can't change co-auth. mode. Use customization.modeCoAuthoring or 'fast' by default
-                        value = (this.appOptions.customization && this.appOptions.customization.modeCoAuthoring!==undefined) ? (this.appOptions.customization.modeCoAuthoring==='strict' ? 0 : 1) : null;
+                    if (!this.appOptions.canChangeCoAuthoring) { //can't change co-auth. mode. Use coEditing.mode or 'fast' by default
+                        value = (this.editorConfig.coEditing && this.editorConfig.coEditing.mode!==undefined) ? (this.editorConfig.coEditing.mode==='strict' ? 0 : 1) : null;
                         if (value===null && this.appOptions.customization && this.appOptions.customization.autosave===false) {
-                            value = 0; // use customization.autosave only when modeCoAuthoring are null
+                            value = 0; // use customization.autosave only when coEditing.mode is null
                         }
                     } else {
                         value = Common.localStorage.getItem("sse-settings-coauthmode");
                         if (value===null) {
-                            value = (this.appOptions.customization && this.appOptions.customization.modeCoAuthoring!==undefined) ? (this.appOptions.customization.modeCoAuthoring==='strict' ? 0 : 1) : null;
+                            value = (this.editorConfig.coEditing && this.editorConfig.coEditing.mode!==undefined) ? (this.editorConfig.coEditing.mode==='strict' ? 0 : 1) : null;
                             if (value===null && !Common.localStorage.itemExists("sse-settings-autosave") &&
                                 this.appOptions.customization && this.appOptions.customization.autosave===false) {
                                 value = 0; // use customization.autosave only when de-settings-coauthmode and de-settings-autosave are null