Instructional Video:
Follow these instructions to call into a Jitsi call/conference.
First, I go over how to call in via Jitsi with the app:
( https://youtu.be/Jg7zEHmIsQg?t=32 )
Then, I go over how to call in via phone number
( https://youtu.be/Jg7zEHmIsQg?t=97 )