What is “Private Time”?
If you enable "Private time" through desktop's application in system taskbar, DeskTime will stop tracking anything you do on your computer. To disable DeskTime, press "Private time" button again. See how to enable "Private time" here.
You can prevent users from using Private time as well. Private time can be disabled in Settings-> Account.
Private time is not adjustable, which means that it is not possible to delete Private time.