Can I comment on attendance records?

Yes, you can comment on both daily attendance records and class attendance records. A comment on a daily record should give details about why that student is considered absent/tardy/etc. for the entire school day. A comment on a class attendance record should provide information specific to that student's attendance status for that particular class period. Note that comments for daily and class attendance are distinct from one another and do not update each other or share any other sort of connection.