Agree to do something about church parking (6)
I believe the answer is:
accept
'agree to' is the definition.
(I've seen this in another clue)
'do something about church parking' is the wordplay.
'do something' becomes 'act' (to act is to do something).
'about' indicates putting letters inside.
'church' becomes 'CE' (Church of England).
'parking' becomes 'p' (abbreviation on road signs).
'ce'+'p'='cep'
'act' placed around 'cep' is 'ACCEPT'.
(Other definitions for accept that I've seen before include "Take -- consent" , "Take (something offered)" , "Say yes > to trust" , "Take as a gift" , "Recognise" .)