Deputies used as a convenience? (6)
I believe the answer is:
agents
'deputies' is the definition.
(I've seen this in another clue)
'a convenience?' is the wordplay.
'convenience?' becomes 'gents' (I've seen this before).
'a'+'gents'='AGENTS'
'used as' is the link.
(Other definitions for agents that I've seen before include "Sales reps" , "Representatives" , "travelling salesmen" , "Spies" , "Factors" .)