Using the CommBox remote which is included with your panel push the 'camera' button (classic panel) or 'screenshot' button 
(display panel). If you have a USB connected, the screenshot will by default save to the USB as a 'png' file otherwise it will
save directly to your CommBox. This can be accessed by selecting the apps Icon on the home screen.

Scroll through the apps and select the file folder.

Once open you will locate a 'pictures' folder which after selecting will take you to your saved screen shot.