The "Manage Check-Ins and Checkouts" section allows administrators to "Add Check-Ins" and see a "Check-Ins" and "Checkouts" list of attendees.
The "Check-Ins" button allows administrators to manually check-in an attendee. The "Scan Now" button allows admins to scan an attendee's badge to check an attendee into an activity.
The "Checkouts" button allows administrators to manually check out an attendee. The "Scan Now" button allows admins to scan an attendee's badge to check an attendee out of an activity.