I believe in routine for my dogs. I think it helps them to feel confident and safe. Besides if you ever try raising eight puppies at once without good routines, you'll go stark raving mad. So we established routines early and still keep them.
They go outside approximately every two hours and know that they'll be let back in. They each have a place of their own to rest and be left alone by the others, if they need it.
At bedtime we also have a routine. Around ten I take them to the garage and they form two lines on each side of the refrigerator where I keep the yogurt. They chose their positions in the lines by themselves but sit in the same place each night. I then feed them in the same order each night, and no it isn't the order of the lines. They each get three spoons of yogurt, then we walk to the back door and they go out for their last chance to pee before bed. When they come in they go their sleep places, some in crates and some in the bedroom, they each get a cookie and then it's sleep time till morning.
Our routines work well because each dog knows what to expect. Each knows where to go, where to sit and what will happen next.
Dogs are wonderful and smart!!!