Female put on a charity event (4)
I believe the answer is:
gala
'charity event' is the definition.
'female put on a' is the wordplay.
'female' becomes 'gal' (gal is a kind of female).
'put on' is a charade indicator (letters next to each other).
'gal'+'a'='GALA'
(Other definitions for gala that I've seen before include "Festival" , "Special sports event" , "Festive occasion - variety of apple" , "Festive celebration" , "Prod with the elbow" .)