With new computers and wireless projection throughout the district, we have more staff who are interested in concepts such as extending your display so that your projector shows different content than your laptop screen. A more specific request that has come up a handful of times has been how to disable presenter view in PowerPoint, which makes use of both screens when using it in extended display mode.
You can enable or disable presenter view by clicking on the “Slide Show” tab in PowerPoint, and then toggling the “Use Presenter View” checkbox (see below). With presenter view off, your computer will show you the same content that is on the projector while presenting with PowerPoint with mirrored displays, and will default to the presentation appearing on your projector only when using extended desktop.