There are 2 types of party:
* Exp share party: up to 8 people can join the party, and when someone kills a mob the experience is divided among all the members (which will mostly result in people taking advantage of you)
* Exp distribution party: up to 4 people can join the party, everyone gets exp for their own kills only. The amount of exp that you get per kill is quite a bit higher.
You can set the type of party in the party menu (by either using the "set" button or just select "exp distribution" in the party match menu when creating a party).
Hope this is a bit clear for you
