1.Login as Branch Head .
2.Click on "Management" .
3.Click On "Manage Teacher Account" and select Tab List of existing Teacher.
4.Click on "Remove User" of button for teacher of which you want to revoke access.
5.Click on button As per your requirement.
5.1.Click on "Student" button to change role of Teacher to student .
5.2.Click on "Disable" button to disable Teacher.
5.3.Click on "Remove from Branch" button to delete Teacher From Respective Branch.
MORE DETAIL: