Personnel Conduct Lesson Four outlines the key differences between discussion-based and operations-based exercises. Discussion-based exercises involve site setup, a guided presentation, facilitated discussion, and wrap-up activities. The majority of discussion comes from moderated participant discussions in whole or breakout groups to meet exercise objectives. Discussion-based exercises are usually indoor events with registration, audio/video equipment, and participant tables. Facilitated and moderated discussions are used to guide participants and keep discussions on track. Presenters, facilitators, controllers, evaluators, players, and observers each have distinct roles in discussion-based exercises.