Hold – member of camera crew (4)
I believe the answer is:
grip
I believe this clue is a double definition.
'hold' is the first definition.
(I know that hold can be written as grip)
'member of camera crew' is the second definition.
(I've seen this before)
(Other definitions for grip that I've seen before include "Domination" , "Clasp" , "mastery of problem" , "Grab" , "Hold fast" .)