I am integrating smart home skill for my thermostat, Smart home skill support COOL, HEAT, AUTO mode of my thermostat but I have one additional mode names "fan only". By researching I found there is a way to define CUSTOM mode by which I can handle user-defined custom mode.
How can I register my custom "fan only" mode? Do I need to tell amazon or Is there any configration in skill or lambda? Please help.