Forming a Party

Missions are generally designed to support four to eight players. A few areas allow parties of up to twelve players. Travel directly to the mission area to find party members, or stop in towns along the way to recruit a team. To add a player to your party, select the desired player by left-clicking on him with the mouse pointer, and then press the + symbol next to the character's name to add him to your party. If the other player is already in a party, you will have the option to join that team if there is room. You can invite henchmen onto the team in the same manner, but they do not have the option to refuse. http://www.guildwars.com/gameplay/exploring/townlandscape/