Notice I put into church to manage (10)
I believe the answer is:
administer
'manage' is the definition.
(administering is a kind of managing)
'notice i put into church' is the wordplay.
'notice' becomes 'ad'.
'put into' indicates putting letters inside.
'church' becomes 'minster' (minster is a kind of church).
'i' placed inside 'minster' is 'minister'.
'ad'+'minister'='ADMINISTER'
'to' acts as a link.
(Other definitions for administer that I've seen before include "give" , "Handle" , "man?" , "Apply" , "Oversee" .)