If your school has enabled the Attendance module for Class Charts, you are able to control how lesson attendance influences session attendance. For example, you could decide that attendance recorded in period 4 is also carried over to the PM session, saving your teachers time when marking attendance.
To make changes to the attendance settings at your school, click on the three lines menu and select Attendance from the list of available options.
Next, click on the Attendance options tab on the left hand side.
You will presented with the following settings, which allow you to control how attendance is recorded.
Copy attendance from selected period to AM: When a teacher marks attendance for the selected period, it also marks the AM session for the selected day.
Copy attendance from selected period to PM: When a teacher marks attendance for the selected period, it also marks the PM session for the selected day.