"4 to 8 qualified people sitting and discussing a topic in front of a large audience" is known as:
Panel discussion comprises of 4 to 8 qualified persons who sit and discuss a topic in front of a large audience. The panel comprises of a chairman or moderator and from 4 to 8 speakers. The audience can interact with the panel. Panel discussion can be an extremely efficient method of mass education. Ref: Park 21st edition, page: 804.
Symposium
Panel discussion
Workshop
Workshop