If you have a tracking element or pixel you don't want to or can't include in your Google Tag Manager code, you can embed it on its own in Brandcast using the embed element.
In your site, open up the page the code should go on. Place it on your master page(s) if you want the code to be on all pages on your website, or place it on one specific page if that's the only place you want to track. If you have a page with a None master applied, you'll need to add the code to that page individually.
You will add the embed code to you page, paste in the code, uncheck iframed, save your changes, and then hide the embed by either making it 0px tall or using the show/hide panel and hiding it on all device modes. Watch the video below to see how you can embed your code.