Hatching eggs - may be a few days different in age??

[jnr005]

We just got our first incubator, a Genissis 1588. Started it up this weekend and ran over to my daughters friend to grab some practice eggs. She had a freshly laid one and then a hen was sitting on 3...which sage said may be a few days old. Put them all in the incubator. So how would I do lockdown when I may have 0-4 day old (already warned under a hen) eggs???

Thanks!

 

[ChickenCanoe]

Lockdown isn't really the issue since timing of cessation of turning or raising humidity isn't set in stone. The issue will be getting the chicks out while one is still pipping.