Chief, head (6)
I believe the answer is:
leader
I believe this clue is a double definition.
'chief' is the first definition.
(I've seen this in another clue)
'head' is the second definition.
(I've seen this in another clue)
(Other definitions for leader that I've seen before include "Person in charge" , "Ruler" , "One inspires or guides others" , "Commander; article" , "Guide; editorial" .)