Add info about using Group Id bindings

README.md

@@ -82,5 +82,15 @@ For example we use: `"GIBE\Producers" : "editors"` to bind everyone in the `GIBE
 
 Beware these will be reset on each login, so changing groups in umbraco will only take effect until the user next logs in. If a user is removed from an AD group they'll automatically be removed from the matching Umbraco group on next login.
 
+## Alternate Group Bindings using Group Id
+
+If you are having problems with NET BIOS group names, you can set the groups claim in the App Registration to use Group Id rather than NetBIOSDomain\sAMAccountName
+
+![image](https://user-images.githubusercontent.com/1257752/235880241-4381fa6e-d72d-494e-bd3f-1ceaf8b4e71d.png)
+
+You can now use the guid format for the Group Id like: `"xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx": "admin", "44a38651-xxxx-4c92-b1b6-51cf26ff9bab": "editor"`
+
+
+