diff --git a/apps/red-ui/src/app/modules/shared-dossiers/services/file-assign.service.ts b/apps/red-ui/src/app/modules/shared-dossiers/services/file-assign.service.ts
index cd7b5ab51..82269a1f3 100644
--- a/apps/red-ui/src/app/modules/shared-dossiers/services/file-assign.service.ts
+++ b/apps/red-ui/src/app/modules/shared-dossiers/services/file-assign.service.ts
@@ -1,44 +1,44 @@
 import { Injectable } from '@angular/core';
 import { UserService } from '@services/user.service';
-import { Dossier, File } from '@red/domain';
+import { Dossier, File, User } from '@red/domain';
 import { DossiersDialogService } from './dossiers-dialog.service';
 import { marker as _ } from '@biesbjerg/ngx-translate-extract-marker';
 import { FilesService } from '@services/files/files.service';
 import { ConfirmationDialogInput, LoadingService, Toaster } from '@iqser/common-ui';
 import { ActiveDossiersService } from '@services/dossiers/active-dossiers.service';
-import { firstValueFrom, Observable } from 'rxjs';
-import { tap } from 'rxjs/operators';
+import { firstValueFrom } from 'rxjs';
+
+const changeReviewerDialogInput = new ConfirmationDialogInput({
+    title: _('confirmation-dialog.assign-file-to-me.title'),
+    question: _('confirmation-dialog.assign-file-to-me.question'),
+});
+
+const changeApproverDialogInput = new ConfirmationDialogInput({
+    title: _('confirmation-dialog.assign-me-as-approver.title'),
+    question: _('confirmation-dialog.assign-me-as-approver.question'),
+});
+
+const atLeastOneAssignee = (files: File[]) => files.reduce((acc, fs) => acc || !!fs.assignee, false);
 
 @Injectable()
 export class FileAssignService {
+    readonly currentUser: User;
+
     constructor(
-        private readonly _dialogService: DossiersDialogService,
-        private readonly _userService: UserService,
-        private readonly _filesService: FilesService,
-        private readonly _activeDossiersService: ActiveDossiersService,
-        private readonly _loadingService: LoadingService,
+        userService: UserService,
         private readonly _toaster: Toaster,
-    ) {}
+        private readonly _filesService: FilesService,
+        private readonly _loadingService: LoadingService,
+        private readonly _dialogService: DossiersDialogService,
+        private readonly _activeDossiersService: ActiveDossiersService,
+    ) {
+        this.currentUser = userService.currentUser;
+    }
 
     async assignToMe(files: File[]) {
-        return new Promise<void>((resolve, reject) => {
-            const atLeastOneFileHasReviewer = files.reduce((acc, fs) => acc || !!fs.assignee, false);
-            if (atLeastOneFileHasReviewer) {
-                const data = new ConfirmationDialogInput({
-                    title: _('confirmation-dialog.assign-file-to-me.title'),
-                    question: _('confirmation-dialog.assign-file-to-me.question'),
-                });
-                this._dialogService.openDialog('confirm', null, data, () => {
-                    firstValueFrom(this._assignReviewerToCurrentUser(files))
-                        .then(() => resolve())
-                        .catch(() => reject());
-                });
-            } else {
-                firstValueFrom(this._assignReviewerToCurrentUser(files))
-                    .then(() => resolve())
-                    .catch(() => reject());
-            }
-        });
+        const filesAreUnderApproval = files.reduce((acc, fs) => acc && fs.isUnderApproval, true);
+
+        return filesAreUnderApproval ? this.#assignMeAsApprover(files) : this.#assignMeAsReviewer(files);
     }
 
     async assignReviewer($event: MouseEvent, file: File, ignoreChanged = false): Promise<void> {
@@ -49,10 +49,32 @@ export class FileAssignService {
         await this._assignFile('approver', $event, file, ignoreChanged);
     }
 
+    #assignMeAsReviewer(files: File[]) {
+        if (atLeastOneAssignee(files)) {
+            const cb = () => this.#assignReviewerToCurrentUser(files);
+            const ref = this._dialogService.openDialog('confirm', null, changeReviewerDialogInput, cb);
+
+            return firstValueFrom(ref.afterClosed());
+        }
+
+        return this.#assignReviewerToCurrentUser(files);
+    }
+
+    #assignMeAsApprover(files: File[]) {
+        if (atLeastOneAssignee(files)) {
+            const cb = () => this.#assignApproverToCurrentUser(files);
+            const ref = this._dialogService.openDialog('confirm', null, changeApproverDialogInput, cb);
+
+            return firstValueFrom(ref.afterClosed());
+        }
+
+        return this.#assignApproverToCurrentUser(files);
+    }
+
     private async _assignFile(mode: 'reviewer' | 'approver', $event: MouseEvent, file: File, ignoreChanged = false): Promise<void> {
         $event?.stopPropagation();
 
-        const currentUserId = this._userService.currentUser.id;
+        const currentUserId = this.currentUser.id;
         const currentDossier = this._activeDossiersService.find(file.dossierId);
         const eligibleUsersIds = this._getUserIds(mode, currentDossier);
 
@@ -97,10 +119,17 @@ export class FileAssignService {
         return mode === 'approver' ? dossier.approverIds : dossier.memberIds;
     }
 
-    private _assignReviewerToCurrentUser(files: File[]): Observable<any> {
+    async #assignReviewerToCurrentUser(files: File[]) {
         this._loadingService.start();
-        return this._filesService
-            .setReviewerFor(files, files[0].dossierId, this._userService.currentUser.id)
-            .pipe(tap(() => this._loadingService.stop()));
+        const reviewer$ = this._filesService.setReviewerFor(files, files[0].dossierId, this.currentUser.id);
+        await firstValueFrom(reviewer$);
+        this._loadingService.stop();
+    }
+
+    async #assignApproverToCurrentUser(files: File[]) {
+        this._loadingService.start();
+        const approver$ = this._filesService.setUnderApprovalFor(files, files[0].dossierId, this.currentUser.id);
+        await firstValueFrom(approver$);
+        this._loadingService.stop();
     }
 }
diff --git a/apps/red-ui/src/assets/config/config.json b/apps/red-ui/src/assets/config/config.json
index f9a12cdad..322276d2f 100644
--- a/apps/red-ui/src/assets/config/config.json
+++ b/apps/red-ui/src/assets/config/config.json
@@ -1,7 +1,7 @@
 {
   "ADMIN_CONTACT_NAME": null,
   "ADMIN_CONTACT_URL": null,
-  "API_URL": "https://dev-05.iqser.cloud/redaction-gateway-v1",
+  "API_URL": "https://dev-08.iqser.cloud/redaction-gateway-v1",
   "APP_NAME": "RedactManager",
   "AUTO_READ_TIME": 3,
   "BACKEND_APP_VERSION": "4.4.40",
@@ -16,7 +16,7 @@
   "MAX_RETRIES_ON_SERVER_ERROR": 3,
   "OAUTH_CLIENT_ID": "redaction",
   "OAUTH_IDP_HINT": null,
-  "OAUTH_URL": "https://dev-05.iqser.cloud/auth/realms/redaction",
+  "OAUTH_URL": "https://dev-08.iqser.cloud/auth/realms/redaction",
   "RECENT_PERIOD_IN_HOURS": 24,
   "SELECTION_MODE": "structural",
   "MANUAL_BASE_URL": "https://docs.redactmanager.com/preview"
diff --git a/apps/red-ui/src/assets/i18n/de.json b/apps/red-ui/src/assets/i18n/de.json
index a067e33ca..2ac69a86c 100644
--- a/apps/red-ui/src/assets/i18n/de.json
+++ b/apps/red-ui/src/assets/i18n/de.json
@@ -554,6 +554,10 @@
       "question": "Dieses Dokument wird gerade von einer anderen Person geprüft. Möchten Sie Reviewer werden und sich selbst dem Dokument zuweisen?",
       "title": "Neuen Reviewer zuweisen"
     },
+    "assign-me-as-approver": {
+      "question": "",
+      "title": ""
+    },
     "compare-file": {
       "question": "<strong>Achtung!</strong> <br><br> Seitenzahl stimmt nicht überein, aktuelles Dokument hat <strong>{currentDocumentPageCount} Seite(n)</strong>. Das hochgeladene Dokument hat <strong>{compareDocumentPageCount} Seite(n)</strong>. <br><br> Möchten Sie fortfahren?",
       "title": "Vergleichen mit: {fileName}"
diff --git a/apps/red-ui/src/assets/i18n/en.json b/apps/red-ui/src/assets/i18n/en.json
index 2062802b5..0948840e8 100644
--- a/apps/red-ui/src/assets/i18n/en.json
+++ b/apps/red-ui/src/assets/i18n/en.json
@@ -554,6 +554,10 @@
       "question": "This document is currently reviewed by someone else. Do you want to become the reviewer and assign yourself to this document?",
       "title": "Re-assign user"
     },
+    "assign-me-as-approver": {
+      "question": "This document is currently under approval by someone else. Do you want to become the approver and assign yourself to this document?",
+      "title": "Re-assign approver"
+    },
     "compare-file": {
       "question": "<strong>Warning!</strong> <br><br> Number of pages does not match, current document has <strong>{currentDocumentPageCount} page(s)</strong>. Uploaded document has <strong>{compareDocumentPageCount} page(s)</strong>. <br><br> Do you wish to proceed?",
       "title": "Compare with file: {fileName}"