Sailor’s right to lead managers (9)
I believe the answer is:
starboard
'sailor's right' is the definition.
(I've seen this before)
'lead managers' is the wordplay.
'lead' becomes 'star' (synonyms).
'managers' becomes 'board' (I've seen this in other clues).
'star'+'board'='STARBOARD'
'to' acts as a link.
(Other definitions for starboard that I've seen before include "Sailor's right" , "Literally, the steering side of a vessel" , "Opposite of port" , "Right side at sea" , "Right side of ship or plane" .)