Deleting Users
Go to Settings / Users, make sure that the Active Users tab is selected, and click on the "trash bin" icon for users whose accounts you want to delete. 
Important: For silent apps, we recommend uninstalling the silent app tracker from the user's computer manually before or after deleting the user. Please see this article for how to do it.
Note: We keep the user account data in backup storage for 30 days, in case you need to restore that data. After 30 days, all the user account data will be permanently deleted.
Restoring Users
If you want to restore a user that you’ve deleted less than 30 days ago, just navigate to Settings / Users, click on the Deleted Users tab, find the user you want to restore, and click on the Restore icon.