Never heard of it.
Of course, there are always the brothers who help out behind the counter and offer closing prayer and stuff like that who aren't ministerial servants. I guess some bodies have developed their own terminology for someone in that situation. The CO would probably shut it down if he heard it.
You should tell the CO that the brothers are considering you for such a position and how honored you are. Then ask him if he can help you find the specific qualifications for the position so you know what to work on.