Can I wander round the apartment, officer? (7)
I believe the answer is:
captain
'officer?' is the definition.
(I know that captain is a type of officer)
'can i wander round the apartment' is the wordplay.
'wander' indicates anagramming the letters.
'round' indicates putting letters inside.
'the apartment' becomes 'apt' (abbreviation in property ads for example).
'can'+'i'='cani'
'cani' with letters rearranged gives 'cain'.
'cain' going around 'apt' is 'CAPTAIN'.
(Other definitions for captain that I've seen before include "eg Hook, Cook" , "Skip" , "One traditionally goes down with a sinking ship" , "Is Pat Cain in charge of the ship?" , "Head of a ship's crew" .)