Otus allows you to take attendance for each class.
Step 1: Navigate to the Classes module.
Step 2: Select the class you'd like to take attendance for
Step 3: Select the Attendance tab
Step 4: By default, you will be taken to the current date. If you want to adjust attendance for a different date, you can use the date picker at the top of the screen.
Step 5: Select the attendance status for each student (Present is already selected by default)
Step 6 (optional): Leave a note with the attendance record.
Step 7: Select Save