Re: In Game/ Sims 4

Options=>Game Options=> Autonomy (that's the first option in this menu)
Either turn this to "Off" so none of your played Sims will do a thing without you or check "Disable Autonomy For Selected Sim" right underneath the "Autonomy" selection to only disable autonomy for the sim that is currently active, so your other family members don't starve when you concentrate on your "main sim" 🙂