It's a matching program. So you'll rank your top choices (which I guess in your case would be ones in FL), and then cross your fingers that one of your top choices also ranked you as an applicant pretty high. It's supposed to help match up mutual interests. It reminds me a lot of the sorority recruitment process, actually, if that analogy helps at all haha.
Here's the example the VIRMP website gives:
By way of example, Metropolis University (MU) has four residencies available in surgery. MU received 22 applications, out of which it chose to rank 12 applicants. In effect, MU has offered jobs to applicants 1, 2, 3 and 4 on its list. Applicant 1 has Metropolis U ranked fourth, #2 has it ranked first, #3 ranked it second and #4 ranked it first. Metropolis would be matched with applicants #2 and #4 and nothing else would happen until applicants #1 and #3 are matched elsewhere, or the programs ranked higher than Metropolis on the applicant's lists were filled.