Staff appointment (4)
I believe the answer is:
post
I believe this is a double definition.
'staff' is the first definition.
(thesaurus)
'appointment' is the second definition.
(appointment to a job)
(Other definitions for post that I've seen before include "Job; upright timber" , "Upright length of wood or metal a permanent military establishment" , "a placement: it's > part of one's goal" , "Letters and parcels; job" , "type of support" .)