The 'Lock Screen' area gives you the same choices for your lock screen.
Selecting 'Background' enables setting your desktop wallpaper to the latest Bing or Windows Spotlight image (it updates automatically) a single Bing or Spotlight image (it stays on that picture until you decide otherwise) any single image on your PC, or a slideshow of images from your PC. A left-hand sidebar listed the main function areas - 'Background', 'Lock screen', 'Daily Bing image', 'Daily Windows Spotlight image' - and clicking any of these displays related options. When we did launch the app, its straightforward interface looked much like one of the built-in Windows 10 settings pages.
