Steven Rogelberg, a professor at UNC Charlotte, has spent decades researching workplace meetings and reports that many of them are a waste of time. Why? Because the vast majority of managers aren't trained in or reviewed on effective meeting management. He explains how leaders can improve meetings -- for example, by welcoming attendees as if they were party guests or banning use of the mute button on conference calls -- and how organizations can support these efforts with better practices and policies, from creating meeting-free days to appointing a Chief Meeting Officer. Rogelberg is the author of the book "The Surprising Science of Meetings: How You Can Lead Your Team to Peak Performance" and the HBR article "Why Your Meetings Stink -- And What To Do About It."