Separate role (4)
I believe the answer is:
part
I believe this clue is a double definition.
'separate' is the first definition.
(both can mean to split or break apart)
'role' is the second definition.
(eg a part or role in a film)
(Other definitions for part that I've seen before include "Constituent - something to play?" , "unemployed actor hopes for" , "Component; divide" , "Member" , "Piece; divide" .)