Editorial chief (6)
I believe the answer is:
leader
This clue is a double definition.
'editorial' is the first definition.
(both can mean a type of newspaper article)
'chief' is the second definition.
(I've seen this in another clue)
(Other definitions for leader that I've seen before include "Guide, commander" , "Superior" , "One whose example is followed" , "Opinion piece; boss" , "Director, guide" .)