Academic Settings / Attendance Settings / Attendance Settings / General Settings / Basic Settings / Default Timetable Category for attendance
Here you can define a timetable category to be associated with all attendance taking operations. The category specified here is always preselected in all attendance taking forms. The end user can of course change this category.
Setting -> Active -> Activities (Figure 1)
Figure 1
Setting ->Active -> Main (Figure 2)
Figure 2