How to turn off fullscreen 3d and display "windowed" widget on desktop?

Hello. I’d like to display a bye-bye message after user quits my application. I thought to close the 3d fullscreen environment and display the widget with my message in the middle of the desktop. It stays there for 30 seconds and disappears, finally closing my app. I have the widget ready, but have no idea what to do next. Mainly, I believe, I don’t know proper names of things in UE so I don’t know what to look for :slight_smile: