This document discusses supporting product claims and conducting sales dialogues with groups. It outlines different types of proof providers like statistics, testimonials, and case histories that can be used to back up claims of a product's benefits. When selling to groups, the document recommends tactics like arriving early, making eye contact with all members, and being diplomatic in discussions. It also provides tips for delivering group presentations like maintaining contact with attendees and standing to the left of visual aids. Finally, it advises listening carefully to questions from group members and addressing both the question asker and the entire group when answering.