1. let nature take it’s course. The hens will leave the nest when they decide to with any hatched chicks.
2. Mark all eggs and remove any new ones to prevent stretching this out.
3. Do you like balut?
4. Wait until you see draw down starting. Segregate the drawing down eggs from the not yet eggs. Use 2 dog crates. Not sure if they should be close or across the yard from each other to prevent confusion. Out of sight feels right.
5. Pull all eggs. Put in incubator and wait. introduce hatched chicks as they dry.
PS – butcher cockerels at first crow. Check them for pin feathers first. Else skin them and make gumbo.