Hello, I was after some advice.
I want to offer Tutors grading on a first come, first served basis.
This means that if a Tutor is grading an assignment, I want to lock other Tutors out from grading.
Further to that, I'd like to release that assignment back for grading if it is not done within an hour of being locked.
What would be the best way to go about this? I can get some custom coding done of course, but not quite sure where to start.