Place to act has phase remaining (5,4)
I believe the answer is:
stage left
'place to act' is the definition.
'phase remaining' is the wordplay.
'phase' becomes 'stage-' (synonyms).
'remaining' becomes 'left' (synonyms).
'stage'+'left'='STAGE LEFT'
'has' acts as a link.
(Other definitions for stage left that I've seen before include "Coach once departed" , "right to the house" , "One side of a theatre" , "on the prompt side" , "actors direction" .)