Agreed with editor supporting the way something was posted (8)
I believe the answer is:
assented
'agreed' is the definition.
(assenting is a kind of agreeing)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for assented that I've seen before include "Acquiesced" , "Agreed to do something" , "Acceded." , "Expressed agreement" , "Consented" .)