menu and front page designation

I am working on an alternative home page for my site. I noticed that the main menu only shows up on the page designated as the “front page”. I want to see how the menu will look on the new page.

Can someone tell me how to either: 1. switch the front page designation from the original to the new template page so I can see how it will look, or 2. enable the main menu on the template page?

Thanks!