Put on Hamlet, initially with one of those moving scenes? (9)
I believe the answer is:
stagehand
'one of those moving scenes?' is the definition.
(a stagehand might move scenery around)
'put on hamlet initially with' is the wordplay.
'put on' becomes 'stage' (to put on a show is to present or stage it).
'initially' indicates taking the first letters.
'with' becomes 'and'.
The first letter of 'hamlet' is 'h'.
'stage'+'h'+'and'='STAGEHAND'
(Other definitions for stagehand that I've seen before include "One may move flats" , "Person moving theatre props" , "Theatrical props handler" , "General helper for play, moves scenery etc" , "being responsible for properties" .)