Like iPhones, Mac computers also have the handy Do Not Disturb function, which mutes your notifications in one fell swoop. If you know you’ll be presenting, it’s a solid option.

You can access it in the upper right corner of your screen, but there’s also a convenient shortcut: Start on the far right edge of your mouse pad, quickly swipe left with two fingers, and the Notification Center will appear on the right of your screen. The Do Not Disturb toggle isn’t initially visible, but it’s right above the date.

You can also manage your notifications to automatically turn on Do Not Disturb when presenting. Click on the Apple icon on the top left, go to System Preferences, then the Notifications icon. Select Do Not Disturb and check “When mirroring to TVs and projectors.” There you’ll also find all sorts of ways to silence or limit notifications from Messages, Mail, Reminders and many more.

*This may be the most useful thing you learn in 2019.

2.

Oh, you have Windows 10?

You can manage notifications, too.