Rough copies spread in clergyman's office (10)
I believe the answer is:
episcopate
'clergyman's office' is the definition.
(the office or responsibilities of a bishop)
'rough copies spread' is the wordplay.
'rough' indicates anagramming the letters (a rough or broken ordering of the letters).
'spread' becomes 'pate' (pate is a kind of spread).
'copies' anagrammed gives 'episco'.
'episco'+'pate'='EPISCOPATE'
'in' acts as a link.
(Other definitions for episcopate that I've seen before include "bishop's office" , "See" , "Bishopric" , "clergyman's office" .)