Like I posted in another thread this system needs to be reworked a lot more. We have a job check before even starting a new duty, but for a join in progress you only see how far they progress, and even then you still don't have the option to wait for next duty. Why not use that initial pop up and do something for those inside and out, giving them the pop up asking those inside "stay / leave" if person hits stay they can't leave for a set time period (5-10min). Then when a "join in progress" player comes they can see what's inside and have the choice join or wait till next. Maybe after a few "stay" for those inside they can get a high priority status for joining the same dungeon (that would also have automatic join in progress).