I'm not sure why you'd expect these features out of the NPC Relationship/Scheduler plugin, but you can actually event this, in theory. However, I would not recommend attempting to recreate the Sims in RPG Maker- it would be a performance nightmare.
You would need to:
- Make an event with NPC Scheduler to have NPCs go to a room in their house
- Have an event page that triggers when the NPC is hungry/thirsty/etc (a variable) that makes the NPC go to a specific place and do a specific animation
- Repeat that for every NPC
You would also need a "needs" system where needs decay over time, so you'd also need the time system plugin, too. In terms of visiting a house, that can just be a conditional event placed in the house, but like Siro said, you'd need a second routine to make them address their needs in said house.
Again, it's possible if you're creative with event pages and conditionals, but having a Sims level of events in RPG Maker really isn't recommended given RPG Maker's resource limitations. The needs system is especially possible and is just a matter of variables- I have one in my game with no plugins.