(Note: You will need to have a keyboard plugged into a USB port in the kiosk to enter the following commands)
For a soft app restart:
1. Tap the Kiosk app to ensure active, then close it by pressing Ctrl + Q.
2. Press Windows + M (CMD + M) to bring up the menu. Select Kiosk option.
3. Wait until all items on the hardware test page are green, then tap Start on the screen.
For a hard reboot:
1. At any time you can press Windows + R (CMD + R) for a kiosk reboot.