Do business right (4)
I believe the answer is:
cook
'do' is the definition.
(thesaurus)
'business right' is the wordplay.
'business' becomes 'co'.
'right' becomes 'ok' (I've seen this in other clues).
'co'+'ok'='COOK'
(Other definitions for cook that I've seen before include "Prepare a hot meal" , "Captain of HMS Endeavour" , "Kitchen worker" , "work in the galley?" , "Heat food" .)