Click Personalization > Taskbar > Select which icons appear on the taskbar. Now, use the toggle in front of the Windows Security notification icon to hide or ... click the app in the results.

You can Show or Hide ... icon you want. It gets added to the taskbar corner overflow icons. Once you are done with the customization, click on Done to save the changes. You can pin any app ...

and then it will ask if you're sure you want to hide the app. A new menu will appear on your phone that says hiding an app will remove the app's icon and name from your home screen and place it ...