Modify roll call record description：After the class roll call, the changes after the student roll call occur, and the cancellation of the class roll call under special circumstances, it is specially stated that the class cannot be named and modified again after the class is cancelled.

Student roll call record modification:Academic Affairs Center="Class Record=" Roll Call Record="Double-click the corresponding record="Corresponding student Modification

Class roll call cancellation instructions：After cancellation, this class cannot be named and modified again