Apple School Manager - resetting client passwords

I have a client/student device where the password has been forgotten. I have tried various avenues to unlock it, but it always comes back to the same message:

"Contact your organisation's administrator.

Need to reset the password? Contact your organisation's administrator or Manager and ask them to reset the password for your Managed Apple Account."

I am the administrator, but I cannot find anywhere to reset student passwords within ASM. The account is within the domain owned the college