Shows model company manuscript (7)
I believe the answer is:
sitcoms
'shows' is the definition.
(sitcom is a kind of show)
'model company manuscript' is the wordplay.
'model' becomes 'sit' (e.g. for a painting).
'company' becomes 'co' (abbreviation).
'manuscript' becomes 'ms' (abbreviation for manuscript).
'sit'+'co'+'ms'='SITCOMS'
(Other definitions for sitcoms that I've seen before include "Shows" , "programmes for TV" , "Comedy programmes" .)