I've been trying for ~1month now, reading guides and searching the web, but I can't make it work. I want to make a button notification with 4 buttons to control my PC's power, volume and browser. I wish to power off, adjust volume and close browser remotely. How do I create this and set it up to work correctly? I tried following guides from ie XDA and Reddit, but they seem to be written for expert users and as such does not have a "step by step" portion.