7. No cell phones or laptops. People must focus on the task at hand and nothing else.
8. Lock the door at the start time and don't unlock it for anyone. People will soon learn to show up on time.
9. Designate a referee to say "One at a time," "Take that off-line," or "So what?" Amazing how well kindergarten rules still work.
10. Kill anyone who says any of these words or phrases: scope, mission, best practices, teaching moment, outside the box, domain, tangent, or <x> is the new <y>.