I’m new to WordPress and I am having problems figuring out how to do basic things. In this case, I would like items on the right side of this page to be on the bottom and the page to take up the full width of the screen.
Have you asked the theme developer for help? That’s included with the theme – and commercial themes are not supported on these forums – partly because we don’t have access to them – so don’t know how they are set up.
We can help with general WP questions, but this one is theme-specific – sounds like you need a different template for that page, perhaps?