German Blue Ram Breeding

I need breeding help. My GBRs are now on their second round of eggs. My first eggs were eating. I have a breeding box set up ready to go, but I have no idea at what point I put the eggs into the breeding box. Do I wait until they fully hatch? What do they look like when they are fully hatched? How do I care for the fry in the breeding box?

HELP!

Hi anyone have any luck breeding Thai micro crabs.