ok a few of you are missing the point i go over this once more
what was posted about team a and team b was correct but i will tell you how tog et the most out of the boost
ok so you have 10 in each team, but you need to keep the mmr up high so one player in the alt team enters the one with the highest current rating this one charater will then boost the other say 3 or even up to 10 players
so basically 1 player boosts 10
hope this helps
just so you no what im saying let one player enter on one team and watch the rating stay the same even though the other 9 havent entered