Not positive but I believe you email osteoboston@gmail.com if you want to participate live in the Ben Leder presentation (7 pm EDT, 5/21/2024 on Zoom). If you can't attend live or wish to watch the presentation at a later date, it will be posted afterwards at OsteoBoston's YouTube channel, https://www.youtube.com/@osteoboston/videos. Previous OsteoBoston presentations are there too.