When you click the Delete button on the Schedule Activities form, you will get a message warning you that you are about to delete the selected schedule activity. You have the option at this point to cancel or go ahead and delete the selected record. If you confirm that you want to delete the selected record, VisionCore will delete it and there will be No way of retrieving that record again.
The Delete button can be password protected so that other users can't delete any of the schedule activity records. You can assign a password to the delete buttons in the Security form.