Put up beams in the auditorium (5)
I believe the answer is:
raise
'put up' is the definition.
(synonyms)
'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" .)