Consider a class management system where courses offered for enrollment each have one or more sections. Students can be registered in only one section of a particular course, given that the timing does not overlap with any previously registered course. Once enrolled, they should be able to see the list of courses they are enrolled in. Similarly, teachers and TAs should be able to see the list of sections they are assigned to and a list of students present in those sections. However, only teachers can remove a student from their