My PSAO, Trg Major and PSI's are all REME and dont have a clue. In my unit the medic (me) is supposed to me self managing (same for the other non REME attached ranks) . If I want a course or other training I have to present the Trg Major or PSI with all the details so they can bid for a place, that is as much as they will do.
In units the trend is that unless you have an officer of the same capbadge, the unit expects an attached rank to manage their own affairs. I dont have a problem with this other than the fact that getting information about training from the AMS can be like getting blood from a stone.