Using Smart Display, all displays you don't actively look at will blur for additional privacy.
If you have a partially supported display setup, you can choose to constantly blur the unsupported display by setting the "Blur unsupported displays" toggle to On. To temporarily snooze the Smart Display feature, you can press ALT+F2. The length of snooze timer can be set from within the Smart Display menu. The snooze timer can be set for: 5, 15, 30 or 60 minutes.