Idle Online Universe RPG

How are the party stats calculated ? I've noticed that the rewards for regular mobs (coin count, gold rate) are the same but when it comes about treasures does the stats form both/6/40 players are added and divided at 2/6/40 or everyone has their own stats ?
Or the party leader's stats  are avalaible for everyone that has joined the party ?

Spawn-based hunting upgrades are based on the party host currently. Soon i'll be changing it to only base off the highest player within a party.