Fast Edit Viewports
Fast Edit viewports are 2D wireframe renderings of your scene.
It may be easier to compose your scene in 3 Fast Edit viewports.
By default, QSB will display front, top and left views of your scene, along with a Preview view when you select four viewports (View->Four Viewports from the main menu. Each view has a title in the lower left corner. Viewports can be changed through the Viewport Menu.
Since Fast Edit viewports are 2D, the Action Restrictors Z or in/out button cannot be used.
When you move objects in 2D, think in terms of the screen space rather than 2d space. Move the object up, down, left and right. The right mouse button is not used for movement.