The breeding group itself is best with 1 male and 2-3 females. Sometimes courtship becomes a little violent. You may lose a female or 2 now and then. At this point in time his colors should be brilliant. If the female accepts she will lay eggs, the male will fertilize them and she in turn will pick them up in her mouth.
Peacocks are all mouthbreeders.
Normally you will not witness this procedure. If you watch her mouth closely, she will move the eggs around in her mouth. It looks like she is chewing tobacco. This is a sure sign of eggs. This however does not mean success.