Change Menu for one page in vulcan theme

Hi I am trying to make a minor change on a website for a friend. The website is trao.org. If you look at it and click on the link “Tow Show” you’ll be able to see what I’m needing help with. Basically, this theme keeps the same navigation menu throughout the website. This is fine for every page except for the “Tow Show” page. I would like the menu to have different links up top. However, I am not sure how to do this and don’t want to edit any files without some advice first. Any help would be great. Thanks!