Okay. Now that I understand where the OP is coming from, I am ready to comment.
!@#$%^&* &%$#@* !! (And the mods don't even need to censor me. I did it myself.)
Those instructions look too much like an owner's manual that comes with an appliance or shop tool. For crying out loud, these are baby chickens, not electric household gadgets.
As Blooie points out, the only light adjusting you need to do in order to have healthy future laying hens is to let the babies have natural day and night light patterns. That means not subjecting them to bright electric light 24/7 or even any time. I suppose if you're shooting for a commercial laying flock, you might be interested in this sort of manipulation, but it's still so over the top, in my view, I would happily take those instructions and put them down a garbage disposal.
For thousands of years, domestic chickens have functioned splendidly by hens laying eggs fertilized by a rooster and then sitting on them for three weeks, and then being available for the little fuzz-butts to warm themselves underneath her body until they get feathers of their own over the next few weeks. Then in several more months, the pullets among them start laying eggs, and the only light they need is provided by the big hot star overhead.
KISS! (Keep it simple stupid!)