So, I'm making a Harry Potter neighborhood that starts with the Marauder's generation as kids. <|:D

I want Sirius/Regulus and Bellatrix/Narcissa/Andromeda to be cousins in the game, but unfortunately, to connect their family trees properly, I would need to build more than 8 sims in CAF, which... obviously, I can't.. So, is it possible to build two separate families, and then link them together by going into SimPE and then making two of them into siblings or something?