For the gang, Charlie gets to share the reward (4)
I believe the answer is:
crew
'for the gang' is the definition.
('crew' can be a synonym of 'gang')
'charlie gets to share the reward' is the wordplay.
'charlie' becomes 'C' (phonetic alphabet).
'gets' means one lot of letters go next to another.
'to share the reward' becomes 'rew' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'c'+'rew'='CREW'
Can you help me to learn more?
(Other definitions for crew that I've seen before include "Ship's or aircraft's staff" , "A ship's workers" , "Vaunted" , "eight > was sounding shrilly" , "Ship/plane operators" .)