How many people can spectate a game with 6 players?

[Acegikmo]

I've gathered around 12 people, and we're all going to play WA in about an hour. However, you can only play with 6 teams at the same time. Can the others spectate on that server or will they be unable to join?

[franpa]

only 1 spectater slot at the moment. (unless you have less teams)