Yikes, I just learned how to do this about an hour ago. I will do my best.
1- create your pano in whatever you prefer to use
2- import your pano into your video editor (I use 30 second duration for the image)
3- Render your video with the panorama image
4: Open your video in spatial mediaI injector 2.0 (link in URL below)
5: Hit the Inject metadata and save your new video file
6: Upload to youtube as normal.