All you have to do is contact the Miami Dolphins ticket office and ask to speak to someone in group sales. That's all. Usually, they'll ask for a min. amount of people in your group. Normally, it's 20 - 25.
Any folks in FL plan on going to the game? We are planing on maybe 6-7 guys from Orlando making a road trip. Still up in the air, but we should try and get a bunch of seats together if its possible. I don't know the policies with purchasing tickets in away stadiums and how many they allocate.