Well, if you've applied already, you already inputted your scores on the application.
After that, at normal schools your score is automatically submitted. For Caribbean (and other) schools you'll just approve Ross as a school you're releasing the scores to. You do this on the AAMC website. But it's the same page you go to when you're checking for your scores to be posted. There should be a link... somewhere.
It's been a while and I know I'm not describing it well.