I found this Alexa custom layout for using a Mitsubishi heat pump in countries other than the United States and NZ.
Here is a link to the skill: https://github.com/syphe/mitsubishi-heatpump-alexa
I can't find a solution on how to install your skills on Alexa.
I tried to creata a new skill in Amazon's developer page, but I have no idea where to find things like ARN, Endpoint, etc.
So I'm stuck.