Nothing very special about Authoring for Buttons. Use a Main Menu with several Menu Items as usual. The only thing different is that you make the main menu hot spots invisible.
V40916b already has TYPE 16 set for Panasonic, and already has PLAY as the automatic "INI2" command at power-up. (PLAY turns on the power to the deck.)
V40916b already has TYPE 16 set for Panasonic, and already has PLAY as the automatic "INI2" command at power-up. (PLAY turns on the power to the DVD deck.)