My experience is somebody has an idea or a burning desire to do something and goes to the priest, who is generally delighted that someone wants to do something. The person talks to friends about it, stands up after Liturgy and announces a meeting or the like.
And away you go.
This is one of my pet peeves, btw. People are always saying "Why doesn't the Orthodox Church do (insert name of ministry, activity, project or charitable outreach)?" Do you want to do that ministry, activity, project or charitable outreach? Then get up on your hind legs and start it.