1. The lowest character in a party may not have less than 2/3 level of the highest character. To make an example a level 60 can share experience with a player of minimum level 40 and any other player between these levels (2/3 * 60 as maximum level in the party = 40 as minimum level in the party).
2. The distance of all party members to the leader must be smaller or equal to 30 fields and between one floor above or below the leader.
3. All party members must be actively involved which means they must either have healed another member or attacked an aggressive monster.
