...Okay, seriously, I can't figure out what you're trying to ask with this opening post?
Are you asking "how do I unlock the Nomad's Nursery"?
If yes, then the answer is easy: you get pregnant. Currently, only Terry (placeholder pregnancy content) can have pregnancy (father or bear), and a small selection of enemy mobs can impregnate the PC - Rabbits, Stallion, Zebra Shaman, Male Lizan, Male/Herm Cats, Naga. And most, if not all of those, are only capable of impregnating a PC with a vagina, due to the lack of anal sex scenes for enemy mobs.
Are you asking "how do I get more content with the Nomad's Nursery?"
If yes, then, again, the answer is simple: you don't. The Nomad's Nursery is intended to be placeholder breeder's content; it lets you see how many kids you have, and what kind. Big kid interactions are planned for act two and the gemstead's nursery.