If the user/device was added via the Hybrid AD join method, then the MyID and password will be used to log in to Intune.
If the user/device was added through the cloud or auto-pilot method, the myid@uga.edu and password is used to log in to Intune.
User access to Intune will be managed via UGA's established account management process that is used to deprovision access to UGAMail and other features available through the user's UGA Microsoft account.
Devices can be removed from Intune using remote reset methods offered by Microsoft. More information can be found here: