Father's to assess clerical office (9)
I believe the answer is:
pastorate
'clerical office' is the definition.
'pastorate' can be an answer for 'office' (pastorate is a kind of office). I'm not sure about the 'clerical' bit.
'father's to assess' is the wordplay.
'father's' becomes 'pa's' (pa can mean dad or father).
'assess' becomes 'rate' (rating is a kind of assessing).
'pas'+'to'+'rate'='PASTORATE'
Can you help me to learn more?
(Other definitions for pastorate that I've seen before include "group in ministry" , "Clergy generally" .)