diff --git a/backend/src/main/java/ch/puzzle/okr/dto/ClientConfigDto.java b/backend/src/main/java/ch/puzzle/okr/dto/ClientConfigDto.java
index 702a4de5c4..667b82fd6f 100644
--- a/backend/src/main/java/ch/puzzle/okr/dto/ClientConfigDto.java
+++ b/backend/src/main/java/ch/puzzle/okr/dto/ClientConfigDto.java
@@ -3,5 +3,5 @@
 import java.util.Map;
 
 public record ClientConfigDto(String activeProfile, String issuer, String clientId, String favicon, String logo,
-        String triangles, String backgroundLogo, String title, Map<String, String> customStyles) {
+        String triangles, String backgroundLogo, String title, String helpSiteUrl, Map<String, String> customStyles) {
 }
diff --git a/backend/src/main/java/ch/puzzle/okr/multitenancy/customization/TenantClientCustomization.java b/backend/src/main/java/ch/puzzle/okr/multitenancy/customization/TenantClientCustomization.java
index b7dc7e004f..7a45808c0f 100644
--- a/backend/src/main/java/ch/puzzle/okr/multitenancy/customization/TenantClientCustomization.java
+++ b/backend/src/main/java/ch/puzzle/okr/multitenancy/customization/TenantClientCustomization.java
@@ -3,5 +3,5 @@
 import java.util.Map;
 
 public record TenantClientCustomization(String favicon, String logo, String triangles, String backgroundLogo,
-        String title, Map<String, String> customStyles) {
+        String title, String helpSiteUrl, Map<String, String> customStyles) {
 }
diff --git a/backend/src/main/java/ch/puzzle/okr/multitenancy/customization/TenantClientCustomizationProvider.java b/backend/src/main/java/ch/puzzle/okr/multitenancy/customization/TenantClientCustomizationProvider.java
index 2c74a9ae07..0085cedd8c 100644
--- a/backend/src/main/java/ch/puzzle/okr/multitenancy/customization/TenantClientCustomizationProvider.java
+++ b/backend/src/main/java/ch/puzzle/okr/multitenancy/customization/TenantClientCustomizationProvider.java
@@ -39,6 +39,7 @@ private TenantClientCustomization readClientCustomizationConfig(String tenantId)
                 env.getProperty(MessageFormat.format("okr.tenants.{0}.clientcustomization.triangles", tenantId)),
                 env.getProperty(MessageFormat.format("okr.tenants.{0}.clientcustomization.background-logo", tenantId)),
                 env.getProperty(MessageFormat.format("okr.tenants.{0}.clientcustomization.title", tenantId)),
+                env.getProperty(MessageFormat.format("okr.tenants.{0}.clientcustomization.helpSiteUrl", tenantId)),
                 getCustomCssStyles(tenantId) //
         );
     }
diff --git a/backend/src/main/java/ch/puzzle/okr/service/clientconfig/ClientConfigService.java b/backend/src/main/java/ch/puzzle/okr/service/clientconfig/ClientConfigService.java
index 16f4c1c4da..0b83fd2f4a 100644
--- a/backend/src/main/java/ch/puzzle/okr/service/clientconfig/ClientConfigService.java
+++ b/backend/src/main/java/ch/puzzle/okr/service/clientconfig/ClientConfigService.java
@@ -57,6 +57,7 @@ public ClientConfigDto getConfigBasedOnActiveEnv(String hostName) {
                 tenantClientCustomization.get().triangles(), //
                 tenantClientCustomization.get().backgroundLogo(), //
                 tenantClientCustomization.get().title(), //
+                tenantClientCustomization.get().helpSiteUrl(), //
                 tenantClientCustomization.get().customStyles()); //
     }
 
diff --git a/backend/src/main/resources/application-dev.properties b/backend/src/main/resources/application-dev.properties
index b995d8a397..cf08aa4a18 100644
--- a/backend/src/main/resources/application-dev.properties
+++ b/backend/src/main/resources/application-dev.properties
@@ -48,6 +48,7 @@ okr.tenants.pitc.clientcustomization.triangles=assets/images/triangles-okr-heade
 okr.tenants.pitc.clientcustomization.background-logo=assets/images/puzzle-p.svg
 okr.tenants.pitc.clientcustomization.favicon=assets/favicon.png
 okr.tenants.pitc.clientcustomization.title=Puzzle OKR
+okr.tenants.pitc.clientcustomization.helpSiteUrl=https://wiki.puzzle.ch/Puzzle/OKRs
 okr.tenants.pitc.clientcustomization.customstyles.okr-topbar-background-color=#1e5a96
 okr.tenants.pitc.clientcustomization.customstyles.okr-banner-background-color=#dcedf9
 
@@ -57,5 +58,6 @@ okr.tenants.acme.clientcustomization.triangles=assets/images/triangles-okr-acme-
 okr.tenants.acme.clientcustomization.background-logo=assets/images/acme.svg
 okr.tenants.acme.clientcustomization.favicon=assets/favicon-acme.png
 okr.tenants.acme.clientcustomization.title=ACME OKR
+okr.tenants.acme.clientcustomization.helpSiteUrl=https://en.wikipedia.org/wiki/Objectives_and_key_results
 okr.tenants.acme.clientcustomization.customstyles.okr-topbar-background-color=#738290
 okr.tenants.acme.clientcustomization.customstyles.okr-banner-background-color=#F2F2F2
diff --git a/backend/src/main/resources/application-integration-test.properties b/backend/src/main/resources/application-integration-test.properties
index 44769ffd8a..dc38d2b59d 100644
--- a/backend/src/main/resources/application-integration-test.properties
+++ b/backend/src/main/resources/application-integration-test.properties
@@ -51,6 +51,7 @@ okr.tenants.pitc.clientcustomization.triangles=assets/images/triangles-okr-heade
 okr.tenants.pitc.clientcustomization.background-logo=assets/images/puzzle-p.svg
 okr.tenants.pitc.clientcustomization.favicon=assets/favicon.png
 okr.tenants.pitc.clientcustomization.title=Puzzle OKR
+okr.tenants.pitc.clientcustomization.helpSiteUrl=https://wiki.puzzle.ch/Puzzle/OKRs
 okr.tenants.pitc.clientcustomization.customstyles.okr-topbar-background-color=#1e5a96
 
 # acme client customization
@@ -59,4 +60,5 @@ okr.tenants.acme.clientcustomization.triangles=assets/images/triangles-okr-acme-
 okr.tenants.acme.clientcustomization.background-logo=assets/images/acme.svg
 okr.tenants.acme.clientcustomization.favicon=assets/favicon-acme.png
 okr.tenants.acme.clientcustomization.title=ACME OKR
+okr.tenants.acme.clientcustomization.helpSiteUrl=https://en.wikipedia.org/wiki/Objectives_and_key_results
 okr.tenants.acme.clientcustomization.customstyles.okr-topbar-background-color=#738290
\ No newline at end of file
diff --git a/backend/src/test/java/ch/puzzle/okr/controller/ClientConfigControllerIT.java b/backend/src/test/java/ch/puzzle/okr/controller/ClientConfigControllerIT.java
index e6b5244a6b..f60eb9ede4 100644
--- a/backend/src/test/java/ch/puzzle/okr/controller/ClientConfigControllerIT.java
+++ b/backend/src/test/java/ch/puzzle/okr/controller/ClientConfigControllerIT.java
@@ -38,7 +38,7 @@ void shouldGetClientConfig() throws Exception {
 
         mvc.perform(get("/config").contentType(MediaType.APPLICATION_JSON))
                 .andExpect(MockMvcResultMatchers.status().isOk())
-                .andExpect(jsonPath(JSON_PATH_ROOT, Matchers.aMapWithSize(9)))
+                .andExpect(jsonPath(JSON_PATH_ROOT, Matchers.aMapWithSize(10)))
                 .andExpect(jsonPath("$.activeProfile", Matchers.is("Active_Profile")))
                 .andExpect(jsonPath("$.issuer", Matchers.is("Issuer")))
                 .andExpect(jsonPath("$.clientId", Matchers.is("Client_Id")))
@@ -47,6 +47,7 @@ void shouldGetClientConfig() throws Exception {
                 .andExpect(jsonPath("$.triangles", Matchers.is("Triangles")))
                 .andExpect(jsonPath("$.backgroundLogo", Matchers.is("Background_Logo")))
                 .andExpect(jsonPath("$.title", Matchers.is("Title")))
+                .andExpect(jsonPath("$.helpSiteUrl", Matchers.is("helpSiteUrl")))
                 .andExpect(jsonPath("$.customStyles.font-family", Matchers.is("verdana")))
                 .andExpect(jsonPath("$.customStyles.font-size", Matchers.is("20px")));
     }
@@ -54,7 +55,7 @@ void shouldGetClientConfig() throws Exception {
     private ClientConfigDto createClientConfigDto() {
         Map<String, String> customStyles = Map.of("font-family", "verdana", "font-size", "20px");
         return new ClientConfigDto("Active_Profile", "Issuer", "Client_Id", "Favicon", "Logo", "Triangles",
-                "Background_Logo", "Title", customStyles);
+                "Background_Logo", "Title", "helpSiteUrl", customStyles);
     }
 
 }
diff --git a/backend/src/test/java/ch/puzzle/okr/multitenancy/customization/TenantClientCustomizationProviderTestIT.java b/backend/src/test/java/ch/puzzle/okr/multitenancy/customization/TenantClientCustomizationProviderTestIT.java
index fe41e7e636..f1c5806aea 100644
--- a/backend/src/test/java/ch/puzzle/okr/multitenancy/customization/TenantClientCustomizationProviderTestIT.java
+++ b/backend/src/test/java/ch/puzzle/okr/multitenancy/customization/TenantClientCustomizationProviderTestIT.java
@@ -21,6 +21,7 @@ public class TenantClientCustomizationProviderTestIT {
     private static final String BACKGROUND_LOGO = "background-logo";
     private static final String FAVICON = "favicon";
     private static final String TITLE = "title";
+    private static final String HELP_SITE_URL = "helpSiteUrl";
 
     private static final String CUSTOM_STYLE_NAME = "okr-topbar-background-color";
     private static final String CUSTOM_STYLE_VALUE = "css-custom-value";
@@ -43,6 +44,7 @@ private void setupPropertiesForTenantWithId(String id) {
         mockProperty("okr.tenants.{0}.clientcustomization.background-logo", BACKGROUND_LOGO, id);
         mockProperty("okr.tenants.{0}.clientcustomization.favicon", FAVICON, id);
         mockProperty("okr.tenants.{0}.clientcustomization.title", TITLE, id);
+        mockProperty("okr.tenants.{0}.clientcustomization.helpSiteUrl", HELP_SITE_URL, id);
         mockProperty("okr.tenants.{0}.clientcustomization.customstyles.okr-topbar-background-color", CUSTOM_STYLE_VALUE,
                 id);
     }
@@ -77,6 +79,7 @@ private void assertTenantClientCustomization(TenantClientCustomization customiza
         assertEquals(prefix(tenantId) + TRIANGLES, customization.triangles());
         assertEquals(prefix(tenantId) + BACKGROUND_LOGO, customization.backgroundLogo());
         assertEquals(prefix(tenantId) + TITLE, customization.title());
+        assertEquals(prefix(tenantId) + HELP_SITE_URL, customization.helpSiteUrl());
         assertCustomStyles(customization, tenantId);
     }
 
diff --git a/backend/src/test/java/ch/puzzle/okr/service/clientconfig/ClientConfigServiceTest.java b/backend/src/test/java/ch/puzzle/okr/service/clientconfig/ClientConfigServiceTest.java
index aced05adae..98daa385e4 100644
--- a/backend/src/test/java/ch/puzzle/okr/service/clientconfig/ClientConfigServiceTest.java
+++ b/backend/src/test/java/ch/puzzle/okr/service/clientconfig/ClientConfigServiceTest.java
@@ -112,6 +112,7 @@ private TenantClientCustomization getTenantClientCustomization(String tenantId)
                 prefix(tenantId) + "triangles", //
                 prefix(tenantId) + "backgroundLogo", //
                 prefix(tenantId) + "title", //
+                prefix(tenantId) + "helpSiteUrl", //
                 new HashMap<>());
     }
 
diff --git a/frontend/src/app/components/application-top-bar/application-top-bar.component.html b/frontend/src/app/components/application-top-bar/application-top-bar.component.html
index 3b66f02ff5..0962f37ebd 100644
--- a/frontend/src/app/components/application-top-bar/application-top-bar.component.html
+++ b/frontend/src/app/components/application-top-bar/application-top-bar.component.html
@@ -22,9 +22,10 @@
       </button>
 
       <button
+        *ngIf="this.helpSiteUrl | async as helpSiteUrl"
         id="hilfeButton"
         class="topBarEntry btn"
-        onclick="window.open('https://wiki.puzzle.ch/Puzzle/OKRs', '_blank')"
+        (click)="window.open(helpSiteUrl, '_blank')"
       >
         <mat-icon aria-hidden="false" aria-label="Help icon" fontIcon="help_outline"></mat-icon>
         <span class="d-none d-md-flex"> Hilfe </span>
diff --git a/frontend/src/app/components/application-top-bar/application-top-bar.component.ts b/frontend/src/app/components/application-top-bar/application-top-bar.component.ts
index cecc531c29..c5e7640771 100644
--- a/frontend/src/app/components/application-top-bar/application-top-bar.component.ts
+++ b/frontend/src/app/components/application-top-bar/application-top-bar.component.ts
@@ -1,6 +1,6 @@
 import { ChangeDetectionStrategy, ChangeDetectorRef, Component, OnDestroy, OnInit } from '@angular/core';
 import { OAuthService } from 'angular-oauth2-oidc';
-import { BehaviorSubject, filter, Observable, of, Subscription, switchMap } from 'rxjs';
+import { BehaviorSubject, Subscription } from 'rxjs';
 import { ConfigService } from '../../services/config.service';
 import { NavigationEnd, Router } from '@angular/router';
 import { UserService } from '../../services/user.service';
@@ -16,6 +16,7 @@ export class ApplicationTopBarComponent implements OnInit, OnDestroy {
   userFullName: string = '';
   menuIsOpen = false;
   logoSrc$ = new BehaviorSubject<String>('assets/images/empty.svg');
+  helpSiteUrl = new BehaviorSubject<string>('https://en.wikipedia.org/wiki/Objectives_and_key_results');
   private subscription?: Subscription;
 
   constructor(
@@ -32,6 +33,9 @@ export class ApplicationTopBarComponent implements OnInit, OnDestroy {
         if (config.logo) {
           this.logoSrc$.next(config.logo);
         }
+        if (config.helpSiteUrl) {
+          this.helpSiteUrl.next(config.helpSiteUrl);
+        }
       },
     });
     this.initUserFullName();
@@ -57,4 +61,6 @@ export class ApplicationTopBarComponent implements OnInit, OnDestroy {
       }
     });
   }
+
+  protected readonly window = window;
 }
diff --git a/frontend/src/app/services/customization.service.spec.ts b/frontend/src/app/services/customization.service.spec.ts
index 9dae942dfa..8f0200d6f0 100644
--- a/frontend/src/app/services/customization.service.spec.ts
+++ b/frontend/src/app/services/customization.service.spec.ts
@@ -36,6 +36,7 @@ describe('CustomizationService', () => {
     logo: 'logo',
     triangles: 'triangles',
     backgroundLogo: 'backgroundLogo',
+    helpSiteUrl: 'https://wiki.puzzle.ch/Puzzle/OKRs',
     customStyles: { cssVar1: 'foo' },
   };
 
@@ -86,6 +87,7 @@ describe('CustomizationService', () => {
     expect(currentConfig?.favicon).toBe(body.favicon);
     expect(currentConfig?.triangles).toBe(body.triangles);
     expect(currentConfig?.backgroundLogo).toBe(body.backgroundLogo);
+    expect(currentConfig?.helpSiteUrl).toBe(body.helpSiteUrl);
     expect(currentConfig?.customStyles['cssVar1']).toBe(body.customStyles['cssVar1']);
 
     expect(callRecorder.getCallCount('title.innerHTML')).toBe(1);
@@ -110,6 +112,7 @@ describe('CustomizationService', () => {
       logo: 'logo-second',
       triangles: 'triangles-second',
       backgroundLogo: 'backgroundLogo-second',
+      helpSiteUrl: 'https://wiki.puzzle.ch/Puzzle/OKRs',
       customStyles: { cssVarNew: 'bar' },
     };
     configSubject.next(bodySecond);
@@ -120,6 +123,7 @@ describe('CustomizationService', () => {
     expect(currentConfig?.favicon).toBe(bodySecond.favicon);
     expect(currentConfig?.triangles).toBe(bodySecond.triangles);
     expect(currentConfig?.backgroundLogo).toBe(bodySecond.backgroundLogo);
+    expect(currentConfig?.helpSiteUrl).toBe(bodySecond.helpSiteUrl);
     expect(currentConfig?.customStyles['cssVarNew']).toBe(bodySecond.customStyles['cssVarNew']);
     expect(currentConfig?.customStyles['cssVar1']).toBe(undefined);
 
diff --git a/frontend/src/app/shared/types/model/ClientConfig.ts b/frontend/src/app/shared/types/model/ClientConfig.ts
index 6d0fb4d0e7..22d2ab606a 100644
--- a/frontend/src/app/shared/types/model/ClientConfig.ts
+++ b/frontend/src/app/shared/types/model/ClientConfig.ts
@@ -14,6 +14,7 @@ export interface CustomizationConfig {
   logo: string;
   triangles: string;
   backgroundLogo: string;
+  helpSiteUrl: string;
   customStyles: CustomStyles;
 }
 export interface ClientConfig extends AuthConfig, CustomizationConfig {}