Thanks Keith. That actually didn’t because those directions appear to be from an old post. There is no settings icon in the top right corner of Desktop. There is in Service, just not Desktop. The options and settings are in the File Backstage View. But I finally found how to enable it…
After I downloaded the external tool that I wanted (Bravo in my case), I had to close my Power BI Desktop and reopened it. Now I have the External tools ribbon. Oorah!