This can happen for a number of reasons:

1. The student must be enrolled/enrolling.
2. If the register is a Tutor/Supervisor based register, then the student’s supervisor must be you.
3. If the register is a Module based register, then the student must be enrolled on that Module.
4. If the register is a Seminar based register, then the student must be listed in the Seminar groups uploaded by your Colleges Admin team.

Items 1, 2 and 3 can be checked on the University Intranet. Item 4 must be checked with your College Admin team.