Definition of advocating:
(n) :
A person who speaks in support of something, or someone; proponent
(v) :
(transitive) To plead in favour of; to defend by argument, before a tribunal or the public; to support, vindicate, or recommend publicly.
(v) :
(transitive) To encourage support for something.
(n) :
Anyone who argues the case of another; an intercessor.
(n) :
A person who supports others to make their voices heard, or ideally for them to speak up for themselves.
(n) :
Someone whose job is to speak for someone's case in a court of law; a counsel.