Many full screen games ( specifically League of Legends in my case ) will only run on the primary monitor. Unfortunately, Windows 10 notifications also seem to only appear on the primary monitor, even if the "primary" taskbar has been relocated to a secondary monitor.
When those games are running in "fullscreen borderless", Windows 10 notifications appear on top of the game -- which can be pretty detrimental to the game experience.
I know I can enable the "quiet hours" for notifications, which should suppress them entirely, but I would prefer to see them on another monitor. I've googled around quite a bit with no luck -- do you have any other suggestions?