After events you assigned officials to have finished you'll be able to mark officials, as absent / missing, partially there and provide feedback that they can view at officials.teamlinkt.com (officials aren't notified when you give them feedback). You're also able to adjust their payout for that event.
Go to the Officials tab at the top then Assignment Adjustments
Use the filters to narrow the events you want to adjust assignments for
Use the dropdowns and inputs to make changes
Click save changes for that event