Whether it is to quickly search for a video, find a bookmark on Pinterest, or dig-up a file in your Google Drive there are times when you’ll find your computer hooked to a projector, but you don’t want everything projected in front of your classroom. That’s when using the “extended display” mode is handy. Extended display allows you to project one thing while looking at another on your computer’s screen.

Let’s say you want to find a in your Google Drive, but you don’t want to project your entire Google Drive dashboard to your students. With extended display activated you could search within your Google Drive for your file then when you find it you can move its display from your computer’s screen to your projector screen. Similarly, if you have use Chromecast you can search in your web browser and or have multiple tabs open in your web browser then choose which specific tab to project.

How you extend your display varies slightly depending upon the operating system that you’re using on your computer. Mac users can find directions here. Windows 7 users will want to follow these directions. Windows 8 users should follow these directions. Windows 10 users will find these directions helpful. Chromebook users can follow the directions here to connect and extend displays.