Academic Settings / Attendance Settings / General Settings / Rights & Controls/ Set for how many days a Teacher can modify non-verified attendance entries
This setting allows you to set how many days after the initial absence submission, a Teacher can edit an entry.
This refers only to non-verified/non-checked absences. If an absence is checked or verified by the institute management, then Teachers cannot edit it.
Setting -> 60 (if current date is 6/9 then the date that absences can be modified has passed)