Seats arranged to advantage (5)
I believe the answer is:
asset
'advantage' is the definition.
(I've seen this before)
'seats arranged' is the wordplay.
'arranged' is an anagram indicator.
'seats' with letters rearranged gives 'ASSET'.
'to' is the link.
(Other definitions for asset that I've seen before include "Advantage, strength" , "A thing of value" , "Part of motor vehicle wheel" , "Something valuable to have" , "Something that's worth having" .)