You need to perform this setting under working condition Menu.
Some companies do not allow employee to modify their work results, so the default setting is that employee can not modify work results. However, if there are many employee in your organization and it is difficult for all managers to make corrections, it is possible for employee to correct the work results and allow managers to check.
Please click here for operation permission settings for employee.
After ticked the box, click update.
If the operation permission setting tab is set to be employee, perform the same settings in the employee working conditions.
Tick the box for "Edit attendance, leaving time, and break time" and click update.