The VT50 is automatically discovered if your network is properly configured. — Staff replied: “Sounds like this is an EU-only difference. There is no such button in the US (and no such button in their app). Either we need someone who can WireShark the code on an EU model, or we'll have to take some guesses.”
The VT50 is automatically discovered if your network is properly configured. This FAQ helps to ensure your network is properly configured for discovery:
Panasonic offers different options via IP, Infrared, and Serial. You may find for instance that explicit input control is often available only via one or the other. In the IP set, inputs are switched using an INPUT NEXT command whereas the infrared and serial sets offers extensive discrete input control.