The last time I played I decided all the teens and kids in the town I was playing in would have to grow up with my Sim kids and teens. So, I did have several families with kids in them and when they reached their birthdays I aged up three at a time per household and per kid. I really love that feature and hadn't used it in a very long time since not many in the stories I had been playing contained that many kids to be able to age up townie kids/teens. I used to just use the Simmoder baby to do it as I saw fit, but this time I decided they all would grow up and I would sell them new outfits at my Sim store. lol
