You've gotten good information. You need to store the eggs your saving
in either a cardboard box, or egg carton, pointy end facing downwards, the
air sac is in the big end. If your storing for more than 2 days, turn the eggs
once daily. You can store for up to 7-10 days. If stored any longer than that,
their chance of hatching will dramatically decrease. Store them at room temp.
(65-70 F) no humidity needed. And Your good. Please never force any hen on
eggs, they will not sit on them unless they are broody, let alone take
care of chicks.
ScissorChick