First clutch and have a question

I have 4 eggs and they all pipped and two of them are already out do i keep them in their until the other 2 eventually come out or do i take the two that are out already and put them in the rack that i have built because im worried with them still in the incubator do they need air or they will sufficate right? Thanks...

I keep mine in the incubator till they all shed. The theory is they get used to all the movement and don't stress as much when they are moved to the rack. It has been working just fine for me. As long as you don't have the glad seal stuff on the tub there will be air exchange. Tubs aren't air tight. I usually open my tubs once a day.