How to create a new navigation bar or remove home link?

Hi I’m new to WP, and I’m using this theme for my client’s site: Mediabook.

Here’s the site: Roberta.

All she wants to show is the logo, main content, and contact link. I’m having all sorts of trouble figuring out how to accomplish this. I think the best method would be to create a second menu below the content for the contact link, and somehow make the top nav invisible (maybe make it all white to match the background). But theme only supports 1 menu, and I’m having trouble figuring out how to create the 2nd nav.

Anybody have any suggestions? Thx