Helper in society located moving north (7)
I believe the answer is:
acolyte
'helper' is the definition.
(acolyte is a kind of helper)
'in society located moving north' is the wordplay.
'in' indicates the answer is hidden within the clue.
'moving north' shows that the letters should be reversed in order (in a down clue, letters go up or 'north').
'etyloca' is hidden within 'society located'.
'etyloca' in reverse letter order is 'ACOLYTE'.
(Other definitions for acolyte that I've seen before include "trainee" , "Loyal follower" , "Attendant - faithful follower" , "Altar boy" , "Faithful assistant" .)