how do you switch control of sims on the same lot but in different households?

this game dont have "continuity", everytime you switch to another family and action in the previous family is lost, even inside your own family, you can only control one lot per time, then you can control any family part on that current lot, any sim outside the current lot is put off screen and lost any action, this is this game mechanic.

you can't switch like in the sims 3, every time you change the lot you are playing or the others will be standing outside(if not the same family) or they have they "previous actions reseted.