Turn on and test federated authentication in Apple Business Manager
After you have completed a successful administrator account sign-in and the username conflict check is complete, you can turn on and test federated authentication.
Turn on federated authentication
In Apple Business Manager , sign in with an account that has the role of Administrator, Site Manager or People Manager.
Click Settings at the bottom of the sidebar, then click Accounts below Organisation Settings.
Click Edit in the Federated Authentication section, then turn on federated authentication for the domains that have been successfully added to Apple Business Manager.
It may take a while to update all accounts.
Test federated authentication
You can test the federated authentication connection after you have performed the following tasks:
You have completed a successful connection to your domain.
The username conflict check is complete.
The Managed Apple ID default format is updated.
Note: Accounts with roles of Administrator, Site Manager or People Manager cannot sign in using federated authentication; they can only manage the federation process.
In Apple Business Manager , sign in with an account that does not have a Staff role.
If the username is found, you will see a new screen indicating you are signing in with an account in your domain.
Click Continue, enter the password for the user, then click Sign In.
Sign out of Apple Business Manager.