[RussEfarmer]

imo being wishy washy about having a staff position (resigning and wanting it back a week later) is a sign of personal instability regarding having the position, so I don't think the person should get staff back on such a short notice. You either want to be staff or you don't

Getting staff back after a longer period of time (3-6 months-ish) you should be able to reapply and if accepted have your original rank reinstated with a competency test