To move any object including things outside the grid, cars, sims, pets I mean ANYTHING! open the cheat box by pressing
ctrl + alt + c . then type:
You can now move ANYTHING you want.
NPC's like paper girl, mailman, burgalars and people like that cannot be trapped e.g. you move them into a room
with no doors, they can get out somehow...
however you can have visitors trapped for however long you like!