Complex sentence: As such, the panel changed on an almost-daily basis-a panelist was limited to two consecutive appearances in the panel without becoming a challenger, and a replacement from a panelist-turned-challenger was chosen from the audience.
Split into simpler sentences: As such, the panel changed on an almost-daily basis. A panelist was limited to two consecutive appearances in the panel without becoming a challenger, and a replacement from a panelist-turned-challenger was chosen from the audience.