Allow network users to log in to your Mac
If your Mac is joined to a network account server, you can specify which network users can log in to your Mac.
On your Mac, choose Apple menu > System Preferences, click Users & Groups, then click Login Options.
If the lock at the bottom left is locked , click it to unlock the preference pane.
Select “Allow network users to log in at login window”, then click Options.
Do one of the following:
Select “All network users”, then click Done.
Select “Only these network users”. Click the Add button , click Network Users or Network Groups, then choose the users or groups permitted to log in to your Mac. Click Done.
To log in using a network account, a user enters their network user account name and password in the login window. If the login window displays a list of users, the network user clicks Other, and then enters their network account name and password. You set the login window to display a list of users in Users & Groups Login Options preferences.