Four rules are suggested to keep sessions on time. 1: While the current presenter is answering questions about their presentation, the following presenter should be connecting their laptop and loading their presentation. This eliminates about a half minute of dead time between presenters. 2: For other than the plenary presenter, the session chair should only give the name of the next presenter as a cue to start their presentation as other introductory information is on the presenter’s first slide. This saves about a minute. 3: Project a second-accurate time of day display (e.g., time.gov) so everyone knows when the session should start. 4: Show a countdown clock with large digits showing the remaining time (e.g., online-stopwatch.com ) on a monitor in front of the presenter, and make it apparent to the presenter (by flashing the time) and the audience (by ringing a bell) when the presenter should stop.