Bench to decide (6)
I believe the answer is:
settle
I believe this clue is a double definition.
'bench' is the first definition.
(settle is a kind of bench)
'decide' is the second definition.
('settle' can be a synonym of 'decide')
'to' is the link.
(Other definitions for settle that I've seen before include "Pay up or sink down" , "Light upon" , "Long wooden bench with a back" , "High-backed bench" , "Bring to an end, come to terms" .)