Hello @theims97 Welcome to the forum.
I'm not exactly sure what your situation is, but I'll try to answer your question.
It sounds as if you've clicked on a lot without first selecting the household that you wish to move.
(1) Household that already has a home
Are you trying to move a household that already has a home to another lot?
When you click on their phone and choose the car icon tab, do you see the "Move Household" option?
(2) Homeless household in your Manage Households menu
In case of a homeless household, you can click on their household in Manage Households.
You should see your little MOVE (truck icon) option there.