The kit is designed to be installed on a Robotron or Joust CPU board. The menu system displays a marquee image for each game which are selected by pressing the Player One Start button. Pressing the Player Two Start button will start the game that is selected.
Installation is relatively simple.
I recommend that these are simply soldered to the main CPU board. You may build an adapter to plug it into the power-supply harness if you prefer. The ROM board is unplugged from the main CPU board and the CPU daughtercard is plugged in in it's place. The ROM board then plugs into the daughtercard. The MultiGame Menu is called on power-up and can be recalled by simultaneously pressing Player One and Player Two start buttons.