Put up beams in the auditorium (5)
I believe the answer is:
raise
'put up' is the definition.
(I know that put up can be written as raise)
'beams in the auditorium' is the wordplay.
'beams' becomes 'rays' (rays of light).
'in the auditorium' indicates a 'sounds like' (homophone) clue (ie as heard on a stage).
'rays' is a homophone of 'RAISE'.
(Other definitions for raise that I've seen before include "Move higher" , "Bring up - an increase in pay" , "Hoist" , "Make higher" , "Inflate" .)