Ok here is my question/problem, if I am looking down from a top view, and dragging my vertex corners, how can I drag the one underneath it at the same time? For example, a cube from the top look like a square, and if I drag the top right vertex of the square ( one of its four corners ) then the top right corner of the cube will move. But underneath it, the other corner will just stay, and I have to then drag it along too ( this is hard when I want to be exact and save time ).

Help please :(