Head and Cab Piggyback setup

I have a Valve Junior Head and Cabinet and thought it would be interesting to turn it into a tilt back combo, but I would also need to use the piggy back hardware, too, correct? I have zero experience of seeing any of the Fender amps with the piggyback hardware installed. Where does it go on the amp and the cabinet? I can't seem to locate any pics of an actual install anywhere. The tiltback legs I have seen and understand the concept and how to install.