Plan within plan for fashionable group? (5)
I believe the answer is:
inset
'plan within plan' is the definition.
I can't tell whether this defines the answer.
'fashionable group?' is the wordplay.
'fashionable' becomes 'in' (in can mean fashionable or trendy).
'group?' becomes 'set' (both can mean a collection).
'in'+'set'='INSET'
'for' is the link.
Can you help me to learn more?
(Other definitions for inset that I've seen before include "Put (one thing) into (another)" , "Small piece inserted" , "Placed inside" , "Thing inserted" , "Part of magazine" .)