Noted because no textual official documentation found. Free to update.

One of the CI.

Preword:

• Appcenter
• Appcenter Distribution – allowing me to set up the in-app auto update to release group.

But for But,

There is as flexible SDK, we can point update check to the specific group as we can prepare. With this, we can get the in-app auto-update without login as tester collaborator.

import com.microsoft.appcenter.utils.storage.SharedPreferencesManager;

...

SharedPreferencesManager.initialize(this);
SharedPreferencesManager.putString("Distribute.distribution_group_id", "***REPLACE WITH GROUP-ID HERE***");