Noun
assistant stage manager (plural assistant stage managers)
(theater) A backstage worker whose main responsibility is the maintenance and supply of props.
I don't know how it is now but the assistant stage manager had to understudy several parts. You had to be ready to go on at any time if the actor couldn't make it to the play. I didn't think anything of it. Glenn Ford
An acting assistant stage manager in a theater in Canterbury, a rep theater. A small wage but just enough to get by on, and I made props, and I walked on, and I changed scenery, and I realized that I just loved it. Jeremy Irons