I can't show you a screenshot per-se as I don't have access to the original XML that the original vendor I worked with sent me. Like I said, it was a proof of concept that I destroyed when they eventually came out with their own revision of their tool. But you can probably experiment with it by starting with APEX's XML provided through their edu-apps profile:
https://www.eduappcenter.com/configurations/j9qupxlqduuwc4t2.xml
Try and work backwards to reconstruct the required fields such as launch URL, and privacy setting. Compare the original XML file with the result in the XML config builder as you go, and be sure to check off the 'Course Navigation' box. Try adding it at the course level to see if you can get it to work. It may be a trial and error process, but if you're not getting that support from the vendor it doesn't hurt to at least try.