I personally am pro anyone being a shadchan! This past year, I set up two of my friends. None of them worked out, but I did get a yes from both sides (which could quite awhile!) and one went out twice! There are no official ‘rules’. You generally call the boys side first, tell him (or his parents) a little about the girl, and send them her resume. I worked with both people I set up and knew the guys so I told the girls about the guys first just to see if it would practical to call the guys.
Good luck with it all!