One in charge of staff (7)
I believe the answer is:
manager
'one in charge of staff' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for manager that I've seen before include "One running a shop, industry etc" , "Executive or controller" , "who tries to cope?" , "Person in charge of staff" , "Someone in control (or who copes?)" .)