To track attendance in Sandbox you would go to the Family tab > Attendance > Click into a class > Click the Actions drop down across from the child > choose Time In, Time Out or Mark as Absent - Sick, Vacation or Other. If you wish the clear the child’s times for the day, click Clear.

If you wish to time children in/out in a group, you would select the dots beside their names > Click the top drop down (3 dots) > Group Time In/Group Time Out. You can also mass Mark as Absent - Sick, Vacation or Other.
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