How many times have you attended an event and then watched the speaker apologetically turn red when a notification of a personal nature pop-ups on screen during the talk? I've seen it happen often. And, I've had this happen to me while speaking on more than a few occasions.
If you use PowerPoint for your presentations, you'll be happy to know that Windows 10 includes an option to turn off notifications during presentations. As long as Windows 10 senses that PowerPoint is running, notifications will be squelched.
Here's how to turn this option on…
Open up All Settings and tap or click on System.
Go to the Notifications & Actions option on the right and located the Hide notifications while presenting option and turn it ON.
And, really, I'm not sure why you'd ever turn this option off.