Follow the below path to give the attendance. Class teacher/Co-Ordinator/Principal can take the attendance

SIS --> Attendance --> Give Daily Attendance --> Select the Class, Section, Date and hit "Get Students" --> By default all the students selected as Present, uncheck the students who are absent for the day --> Save Attendance

If the student is shuffled to another section, you can give the attendance in the new section from tomorrow onwards for that students

Note: If the biometric attendance is activated, you can not edit the attendance