There will be 2 types of matches to choose from:
1st TYPE:
A Tag-Team Duel (also known as a 2v2 Duel) is exactly like a normal Duel, but 4 players are playing, one after the other. Meaning each team choose one of their members to start the match, the matches are 2/3. After one losses the other teammate takes his place and thus until both players from a team lose.
2nd TYPE:
Points:
Then depending on that how you won the games you are getting points. Each duel will begin with 8000 Life Points and all decks are allowed except Burn, Mill, Stall, Exo, Inzectors, DW and Windups
1st player wins over the 2 of the other team - 2 points
1st player looses but the 2nd one wins - 1 point