diff --git a/client/src/app/shared/components/head-bar/head-bar.component.scss b/client/src/app/shared/components/head-bar/head-bar.component.scss
index 9eb650aea..b7f28b05d 100644
--- a/client/src/app/shared/components/head-bar/head-bar.component.scss
+++ b/client/src/app/shared/components/head-bar/head-bar.component.scss
@@ -35,5 +35,5 @@
 }
 
 mat-toolbar.multi-select {
-    background-color: #757575;
+    background-color: #757575 !important;
 }
diff --git a/client/src/app/shared/components/projector/projector.component.html b/client/src/app/shared/components/projector/projector.component.html
index 41a1b7646..05bf4b119 100644
--- a/client/src/app/shared/components/projector/projector.component.html
+++ b/client/src/app/shared/components/projector/projector.component.html
@@ -1,7 +1,9 @@
 <div id="container" [osResized]="resizeSubject" [ngStyle]="containerStyle" #container>
     <div id="projector" [ngStyle]="projectorStyle">
         <div id="header" [ngStyle]="headerFooterStyle" *ngIf="enableHeaderAndFooter">
-            <!-- TODO: Logo <img *ngIf="enableLogo" id="logo"> -->
+            <!-- projector logo -->
+            <os-logo *ngIf="enableLogo" inputAction="logo_projector_main" class="projector-logo-main"> </os-logo>
+
             <div *ngIf="enableTitle" id="eventdata">
                 <div
                     *ngIf="eventName"
diff --git a/client/src/app/shared/components/projector/projector.component.scss b/client/src/app/shared/components/projector/projector.component.scss
index da9298595..752eb4b0c 100644
--- a/client/src/app/shared/components/projector/projector.component.scss
+++ b/client/src/app/shared/components/projector/projector.component.scss
@@ -21,12 +21,12 @@
             margin-bottom: 20px;
             z-index: 1;
 
-            #logo {
+            .projector-logo-main {
+                height: 50px;
                 padding-left: 50px;
                 padding-top: 10px;
-                height: 50px;
-                margin-right: 25px;
                 float: left;
+                display: flex;
             }
 
             #eventdata {
diff --git a/client/src/app/shared/components/projector/projector.component.ts b/client/src/app/shared/components/projector/projector.component.ts
index e030a079b..437e93a7b 100644
--- a/client/src/app/shared/components/projector/projector.component.ts
+++ b/client/src/app/shared/components/projector/projector.component.ts
@@ -157,20 +157,33 @@ export class ProjectorComponent extends BaseComponent implements OnDestroy {
         super(titleService, translate);
 
         // Get all important config variables.
+
+        // enable header/footer
         this.configService
             .get<boolean>('projector_enable_header_footer')
             .subscribe(val => (this.enableHeaderAndFooter = val));
         this.configService.get<boolean>('projector_enable_title').subscribe(val => (this.enableTitle = val));
+
+        // projector colors
         this.configService
             .get<string>('projector_header_fontcolor')
             .subscribe(val => (this.headerFooterStyle.color = val));
         this.configService
             .get<string>('projector_header_backgroundcolor')
             .subscribe(val => (this.headerFooterStyle['background-color'] = val));
-        this.configService.get<boolean>('projector_enable_logo').subscribe(val => (this.enableLogo = val));
         this.configService
             .get<string>('projector_background_color')
             .subscribe(val => (this.projectorStyle['background-color'] = val));
+
+        // projector logo / background-image
+        this.configService.get<boolean>('projector_enable_logo').subscribe(val => (this.enableLogo = val));
+        this.configService.get<{ path?: string }>('logo_projector_header').subscribe(val => {
+            if (val && val.path) {
+                this.headerFooterStyle['background-image'] = "url('" + val.path + "')";
+            }
+        });
+
+        // event data
         this.configService.get<string>('general_event_name').subscribe(val => (this.eventName = val));
         this.configService.get<string>('general_event_description').subscribe(val => (this.eventDescription = val));
         this.configService.get<string>('general_event_date').subscribe(val => (this.eventDate = val));
diff --git a/client/src/app/site/users/components/user-detail/user-detail.component.html b/client/src/app/site/users/components/user-detail/user-detail.component.html
index 74d3c3535..aee2d6efa 100644
--- a/client/src/app/site/users/components/user-detail/user-detail.component.html
+++ b/client/src/app/site/users/components/user-detail/user-detail.component.html
@@ -48,7 +48,6 @@
         *ngIf="user"
         (keydown)="onKeyDown($event)"
     >
-        <!-- <h3 translate>Personal Data</h3> -->
         <div *ngIf="isAllowed('seeName')">
             <!-- Title -->
             <mat-form-field
@@ -107,7 +106,7 @@
             </mat-form-field>
 
             <!-- Gender -->
-            <mat-form-field class="form25 force-min-with" *ngIf="user.gender || editUser">
+            <mat-form-field class="form25 force-min-with" *ngIf="user.gender || (editUser && isAllowed('manage'))">
                 <mat-select placeholder="{{ 'Gender' | translate }}" formControlName="gender">
                     <mat-option>-</mat-option>
                     <mat-option *ngFor="let gender of genderList" [value]="gender">{{ gender | translate }}</mat-option>
diff --git a/client/src/app/site/users/components/user-list/user-list.component.html b/client/src/app/site/users/components/user-list/user-list.component.html
index 50cfe5914..39fd4f47e 100644
--- a/client/src/app/site/users/components/user-list/user-list.component.html
+++ b/client/src/app/site/users/components/user-list/user-list.component.html
@@ -124,72 +124,71 @@
                 <mat-icon>cloud_upload</mat-icon>
                 <span translate>Import</span><span>&nbsp;...</span>
             </button>
+        </div>
+        <div *ngIf="isMultiSelect">
+            <button mat-menu-item (click)="selectAll()">
+                <mat-icon>done_all</mat-icon>
+                <span translate>Select all</span>
+            </button>
 
-            <div *ngIf="isMultiSelect">
-                <button mat-menu-item (click)="selectAll()">
-                    <mat-icon>done_all</mat-icon>
-                    <span translate>Select all</span>
+            <button mat-menu-item (click)="deselectAll()">
+                <mat-icon>clear</mat-icon>
+                <span translate>Deselect all</span>
+            </button>
+
+            <div *osPerms="'users.can_manage'">
+                <mat-divider></mat-divider>
+                <button mat-menu-item (click)="setGroupSelected()">
+                    <mat-icon>people</mat-icon>
+                    <span translate>Add/remove groups ...</span>
                 </button>
 
-                <button mat-menu-item (click)="deselectAll()">
-                    <mat-icon>clear</mat-icon>
-                    <span translate>Deselect all</span>
+                <div *ngIf="presenceViewConfigured">
+                    <button mat-menu-item *osPerms="'users.can_manage'" routerLink="presence">
+                        <mat-icon>transfer_within_a_station</mat-icon>
+                        <span translate>Presence</span>
+                    </button>
+                </div>
+
+                <button mat-menu-item *osPerms="'users.can_manage'" routerLink="import">
+                    <mat-icon>save_alt</mat-icon>
+                    <span translate>Import</span><span>&nbsp;...</span>
                 </button>
 
                 <div *osPerms="'users.can_manage'">
                     <mat-divider></mat-divider>
-                    <button mat-menu-item (click)="setGroupSelected()">
-                        <mat-icon>people</mat-icon>
-                        <span translate>Add/remove groups ...</span>
+
+                    <button mat-menu-item (click)="setActiveSelected()">
+                        <mat-icon>block</mat-icon>
+                        <span translate>Enable/disable account ...</span>
                     </button>
 
-                    <div *ngIf="presenceViewConfigured">
-                        <button mat-menu-item *osPerms="'users.can_manage'" routerLink="presence">
-                            <mat-icon>transfer_within_a_station</mat-icon>
-                            <span translate>Presence</span>
-                        </button>
-                    </div>
-
-                    <button mat-menu-item *osPerms="'users.can_manage'" routerLink="import">
-                        <mat-icon>save_alt</mat-icon>
-                        <span translate>Import</span><span>&nbsp;...</span>
+                    <button mat-menu-item (click)="setPresentSelected()">
+                        <mat-icon>check_box</mat-icon>
+                        <span translate>Set presence ...</span>
                     </button>
 
-                    <div *osPerms="'users.can_manage'">
-                        <mat-divider></mat-divider>
+                    <button mat-menu-item (click)="setCommitteeSelected()">
+                        <mat-icon>account_balance</mat-icon>
+                        <span translate>Set committee ...</span>
+                    </button>
 
-                        <button mat-menu-item (click)="setActiveSelected()">
-                            <mat-icon>block</mat-icon>
-                            <span translate>Enable/disable account ...</span>
-                        </button>
+                    <mat-divider></mat-divider>
 
-                        <button mat-menu-item (click)="setPresentSelected()">
-                            <mat-icon>check_box</mat-icon>
-                            <span translate>Set presence ...</span>
-                        </button>
+                    <button mat-menu-item (click)="sendInvitationEmailSelected()">
+                        <mat-icon>mail</mat-icon>
+                        <span translate>Send invitation email</span>
+                    </button>
 
-                        <button mat-menu-item (click)="setCommitteeSelected()">
-                            <mat-icon>account_balance</mat-icon>
-                            <span translate>Set committee ...</span>
-                        </button>
-
-                        <mat-divider></mat-divider>
-
-                        <button mat-menu-item (click)="sendInvitationEmailSelected()">
-                            <mat-icon>mail</mat-icon>
-                            <span translate>Send invitation email</span>
-                        </button>
-
-                        <button mat-menu-item (click)="resetPasswordsSelected()">
-                            <mat-icon>vpn_key</mat-icon>
-                            <span translate>Generate new passwords</span>
-                        </button>
-                        <mat-divider></mat-divider>
-                        <button mat-menu-item class="red-warning-text" (click)="deleteSelected()">
-                            <mat-icon>delete</mat-icon>
-                            <span translate>Delete</span>
-                        </button>
-                    </div>
+                    <button mat-menu-item (click)="resetPasswordsSelected()">
+                        <mat-icon>vpn_key</mat-icon>
+                        <span translate>Generate new passwords</span>
+                    </button>
+                    <mat-divider></mat-divider>
+                    <button mat-menu-item class="red-warning-text" (click)="deleteSelected()">
+                        <mat-icon>delete</mat-icon>
+                        <span translate>Delete</span>
+                    </button>
                 </div>
             </div>
         </div>
diff --git a/openslides/users/views.py b/openslides/users/views.py
index 64f393f9a..277b05308 100644
--- a/openslides/users/views.py
+++ b/openslides/users/views.py
@@ -16,6 +16,7 @@ from django.contrib.sites.shortcuts import get_current_site
 from django.core import mail
 from django.core.exceptions import ValidationError as DjangoValidationError
 from django.db import transaction
+from django.http.request import QueryDict
 from django.utils.encoding import force_bytes, force_text
 from django.utils.http import urlsafe_base64_decode, urlsafe_base64_encode
 
@@ -114,7 +115,8 @@ class UserViewSet(ModelViewSet):
                 self.permission_denied(request)
 
             # This is a hack to make request.data mutable. Otherwise fields can not be deleted.
-            request.data._mutable = True
+            if isinstance(request.data, QueryDict):
+                request.data._mutable = True
             # Remove fields that the user is not allowed to change.
             # The list() is required because we want to use del inside the loop.
             for key in list(request.data.keys()):