Quarters affected? Pitch tents (6)
I believe the answer is:
encamp
'pitch tents' is the definition.
(I've seen this before)
'quarters affected?' is the wordplay.
'quarters' becomes 'en'.
'affected?' becomes 'camp' (camp can mean exaggerated or affected).
'en'+'camp'='ENCAMP'
(Other definitions for encamp that I've seen before include "Settle into a tent" , "Put up tents" , "Settle under canvas" , "Bivouac" , "Establish tented accommodation (for soldiers)" .)