I know this is very basic, but it is causing me trouble. How do you control the view on the different displays.  For instance, on the overhead view when I am setting up my scene how do I make the view larger or smaller so I can see the various objects? Also, is there an easy way to pan up and down and side to side?  I'm not talking about the camera angle, I mean the view showing the camera and the various parts of the scene. I watch the various how to videos and I see them zooming in and out and side to side but they never expland how they are doing it.