I have four 21-week-old pullets. As best as I can tell, three of them are laying in the nesting boxes on their own. I did not have to train them. The Light Brahma has not started yet. Hopefully, she will take on the habits of her fellow layers.
Then I got 5 Bovan Brown hens, around a year-old. They were sold from a commercial operation. They looked like they were going through a molt, plus the transition has to be overcome. They have been with me several weeks. Two of them have laid eggs in the nesting boxes in the last week. I was wondering if I should contain them a good part of the day to make sure the other three are not laying elsewhere. They might not be laying yet, but there could be hidden nests somewhere.