On top of castle cron you have to parform a service using an inventory item to complete the quest. In a l party only the party leader can successfully use the item as it behaves like a raid summon, but the effect does not advance the quest for other party members. Each party member there must either be made leader or leave the party to advance their own quest log. Can't this be handled in a way that allows each person to advance their log without driving into the party menu?