Conflict over a study for the one in charge (6)
I believe the answer is:
warden
'the one in charge' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'conflict over a study' is the wordplay.
'conflict' becomes 'war' (war is a kind of conflict).
'over' is a charade indicator (letters next to each other) (in a down clue, some letters go over others).
'a study' becomes 'den' (term for a study or office).
'war'+'den'='WARDEN'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for warden that I've seen before include "Head of certain schools, colleges, etc" , "Supervisor; governor" , "Andrew, strangely, is in prison" , "Lord -- of the Cinque Ports" , "Prison or traffic official" .)