Board's about-face (6)
I believe the answer is:
reside
'board's' is the definition.
(board can mean to stay in an establishment)
'about-face' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'face' becomes 'side' (synonyms).
're'+'side'='RESIDE'
(Other definitions for reside that I've seen before include "Hang out with" , "Stay - desire (anag)" , "Occupy a place" , "Live in permanently" , "Live (at an address)" .)