screensaver

The screen function talks about displaying the screen clock in digital or analog form and a screen saver. Anyone know how to display the "electronic" clock on the screen? I saw it once at the showroom but have been unable to set it up for display in the car. In any mode. Anyone know?

2015 5.0 Ultimate. I downloaded images from a usb on to jukebox media in car. How do I set the "video image" as a screensaver? I can play as a slideshow but want to setup screensaver. Please help.