Member's parking skill (4)
I believe the answer is:
part
'member's' is the definition.
(e.g. member of the family is part of the family)
'parking skill' is the wordplay.
'parking' becomes 'p'.
'skill' becomes 'art' (I've seen this before).
'p'+'art'='PART'
(Other definitions for part that I've seen before include "Sever; portion" , "character on > stage" , "Some - theatrical role" , "goodbye" , "Fraction of the whole - separate" .)