As there haven't been mentioned how the people will team up for doing a repeatable dungeon (instance), I suggest there will be an interface window where the player can see the available dungeons for his/her character and than be able to select one instance and apply for it. The Auto-Party system will team him up with other players that have applied for that specific dungeon. Its like teaming up in Fort Aspenwood or Jade Quary, only that the character shouldn't be in a specific place to do that. He can apply for that dungeon from any part of the world just from that Instances window. If he is in a team, he will have the option for "team apply". When the team is ready matched by the system he will have the option to decline or accept the party. This way it will avoid crowded places at the dungeons enters. And it will be easier for players to find teams to join, knowing that there is no dedicated healer or tank classes, this idea fits really good. There wont be any timer to join...the request to apply will remain valid until the player logs off or until he cancels it. In this time he can be anywhere in the world doing different activities.