An attendance that has been submitted to CCMS cannot be altered it can only be cancelled and resubmitted.
To cancel an attendance simply open the attendance screen and click the Cancel button.
Before the attendance is cancelled the Session list will appear in ‘View’ mode and cannot be edited.
After the attendance has been cancelled it switches to ‘Edit’ mode and can now be changed by clicking on the Edit or Delete actions as needed.
Once you have made any necessary changes then you can resubmit.