How do I create various Window Sizes (ViewPort) for each level?

My game switches from Vertical Levels to Horizontal Levels.

If I change the ViewPort size in the Properties Settings for one level it changes for the rest.

I would like the Vertical levels' ViewPort to be 240 width x 400 height. For the Horizontal Levels I would like to make it 960 + for width and 240 for height.

This way the dotted lines will line up with Layout size and when I run the game I won't see the all the extra space.

Thanks