How to add more services(commands) in IOT devices?

[vinothkumar]

Dear All,

My IOT device controlled by Alexa Echo Dot
IOT Device - Raspberry Pi 3 Model B + Fauxmo Library(Belkin Wemo Switch)
and End Point is HTTP

The present service is,
Alexa, turn on/off light

but, I want to add more services(commands)
Ex:
   Alexa, Dim/Brighten the light1
   Alexa, set fan to speed1/speed2

Please give some suggestion

Regards,
VinothS