Perhaps better (and maybe more feasible) would be to have an option when you initially sign up for the op/ page to automatically sign up again after completion until you go back to the NPC and tell him/ her that you're done or would like to do a different op/ page. This way they don't have to implement some sort of menu option out in the field triggered by the completion of the op/ page which might be tricky, or at least have the potential to interfere with what players are doing, and for players it has the same effect (and with even less tedium).
