No going home when I send you to a community lot!

I am looking for a mod that will prevent my sims from going home without me telling them to do so. I had found one on a site and have tried it for a week however the problem is that any sims I am not playing are also for example at the park they won't go home either. They all stand around whining because they are tired. Many of them just start passing out. Here is what I would like:

I send my sim and family to the park in the evening. I use cheats to manipulate their needs. They may be completly fine on motives and one by one will just go home. I want them to stay together as a family until I am ready for them to go home. I don't know if there is a way so that this mod will only affect the family I am controlling at the time. I want the townies and others to go home as needed instead of sticking around the entire time passing out, peeing themselves and dying from hunger or stinking up the place.

I have removed the other mod from my game because it was causing havoc in my game due to the uncontrolled sims not being able to leave either. Thanks to anyone who can help