docs: add Entra ID enterprise application enablement guide (#677)

Add documentation for enabling the NetBird enterprise application in
Microsoft Entra ID, including finding the app by Application ID and
granting admin consent for the directory.

src/components/NavigationDocs.jsx

@@ -333,6 +333,10 @@ export const docsNavigation = [
             href: '/manage/team/add-users-to-your-network',
           },
           { title: 'Approve Users', href: '/manage/team/approve-users' },
+          {
+            title: 'Enable NetBird for Entra ID',
+            href: '/manage/team/entra-id-app-enablement',
+          },
           {
             title: 'Provision Users & Groups',
             href: '/manage/team/idp-sync',

src/pages/manage/team/entra-id-app-enablement.mdx

@@ -0,0 +1,42 @@
+import {Note} from "@/components/mdx";
+
+# Enable NetBird for Microsoft Entra ID
+
+Before your organization can use Microsoft Entra ID features with NetBird — such as user provisioning, group sync, or single sign-on — you need to enable the NetBird enterprise application in your Entra ID tenant and grant admin consent.
+
+## Prerequisites
+
+- A Microsoft Entra ID tenant
+- An account with **Global Administrator** or **Cloud Application Administrator** role
+
+## Step 1: Find the NetBird Enterprise Application
+
+1. Sign in to the [Azure portal](https://portal.azure.com)
+2. Navigate to **Home** → **Microsoft Entra ID** → **Enterprise Applications**
+3. Search for the application with Application ID: `7a7538de-b7ed-4e49-befe-edbe74d5e0a1`
+4. Select the **NetBird** application from the results
+
+<p>
+    <img src="/docs-static/img/manage/team/entra-id-app-enablement/enterprise-applications.png" alt="Find NetBird in Enterprise Applications" className="imagewrapper-big"/>
+</p>
+
+## Step 2: Grant Admin Consent
+
+1. In the NetBird application overview, click **Permissions** in the left menu
+2. Click **Grant admin consent for Default Directory**
+3. Review the requested permissions and confirm
+
+<p>
+    <img src="/docs-static/img/manage/team/entra-id-app-enablement/grant-admin-consent.png" alt="Grant admin consent for NetBird" className="imagewrapper-big"/>
+</p>
+
+<Note>
+    Granting admin consent allows NetBird to access the necessary directory data for your organization. This is a one-time setup step.
+</Note>
+
+## Next Steps
+
+Once admin consent is granted, you can configure Entra ID integration with NetBird:
+
+- [Provision Users & Groups via API](/manage/team/idp-sync/microsoft-entra-id-sync)
+- [Provision Users & Groups via SCIM](/manage/team/idp-sync/microsoft-entra-id-scim-sync)