UPDATE (6/26/2020): Live streaming in 360 not available on Facebook
Facebook has updated their live streaming dashboard. The old "create" system (https://www.facebook.com/live/create) was replaced with a new "producer" dashboard. Unfortunately, the 360 video feature is not available in the new system. Until recently you could switch to the old dashboard in order to live stream 360 content. As of 6/26/2020 this is no longer possible (to our knowledge).
We will continue to monitor the situation. This page will be updated if a solution is found.
1. Setup stream source on OBS
2. Stream video to Facebook Live 360