For before and after school programs or for ad-hoc occasions like doctor's appointments, you may need to check a child into a class more than once a day. In this case, you can simply check the child back in one of two ways:
From the Classroom Homescreen, by selecting the green icon beside the "Send Report" button
or from the Add Update Screen, by selecting the "Check in" tile, and selecting the child in question.
These times will be reported in the Attendance History.