First get 12 people, then kick 6. Then go and find a search game but before you search, upload a large file to youtube or something like that. You should get into a game with just six of you. Then invite 6 other people, the game will not start. The host then leaves and is invited back by people in the game. The lobby should be locked and the game starts as soon as the host leaves
REP+ if this helped
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