II just write the set date on each egg. Makes it easier on me so when I have 10 or so batches, I can tell which eggs need to go where. My desktop calender has the set and hatch dates. Set date has number of every breed, hatch date has breeds, but no number until lockdown. I make a note in the set date box as to how many are left after each candling. Works well for me anyways, but I always work better with what appears to be disorganized chaos to everyone else, lol.