In order to view or edit your Global Settings, you must first be logged into your website's Dashboard.
Here you can add a Tagline for your truck that will appear in the footer of your site, a Logo for your header, as well as a Logo for your footer.
Please make sure any Logo images you upload are high quality jpg, png or gif files. Please also note that Logo images are best when transparent pngs or gifs. See this article on transparent images.