Focus on location, fair (9)
I believe the answer is:
spotlight
'focus' is the definition.
(I've seen this before)
'on location fair' is the wordplay.
'on' says to put letters next to each other.
'location' becomes 'spot' (spot is a kind of location).
'fair' becomes 'light' (as in fair hair).
'spot'+'light' is 'SPOTLIGHT'.
(Other definitions for spotlight that I've seen before include "Give prominence to" , "Where attention is focused" , "Lit up in public here" , "It illuminates a small area" , "Focus" .)