I immediately put her in a box with layers of towels on the bottom, and that is where she had her first litter. I can usually tell when they are nearing that point by feeling their underside. Mommy usually instinctively knows what to do once they appear. It all depends on the frequency of delivery. If they all appear within minutes of each other, she may even forget to detach the umbilical cord, at which point I use sterilized scissors to cut it about an inch from the body.
Daddy often looks over the top of the box to see what is happening.
At times he may jump into the box to see them, and when they get older he will play and sleep with them and the dam. If he gets too rambunctious, the female will always make him leave. They are usually litter trained in less then a week. When she decides that she has had enough, she will brush them away with her paw. Once she stops feeding them it will not be too very long until she again gets in noisy estrus.