Don's stage (3,2)
I believe the answer is:
put on
I believe this clue is a double definition.
'don's' is the first definition.
(synonyms)
'stage' is the second definition.
(as in putting on a show)
(Other definitions for put on that I've seen before include "in an unnatural way" , "Don clothes or stage play" , "Donned" , "Assume < present" , "Don; mount (a play)" .)