An idea about Unplayed Sims autonomy: marriage and babies

I am playing two houses with sims that are family and neighbors. In one of the houses I have a married couple with 4 kids: Jackie Mosley and husband (my favorites). The Sim woman (Jackie Mosley) in that house is the sister and daughter of the another house. The situation is that I want this another sister (Darla Mosley) who lives with her mother to find love, get married and have kids without having my intervention. If I play Darla and her mother I do not want stop aging Jackie's house neither run back and forth on each house. So this is my idea. On the Game Play section where there is an option of either aging or not played sims and unplayed Sims there should be a button or switch that allows unplayed Sims to let them pick their decision to be married and/or have children. The other idea could be that on Manage Worlds each house could have like a switch button saying something like: Do you allow this house to be marry and have children? Yes/No