How do I netboot?

I have read https://www.raspberrypi.org/documentatio…utorial.md but he instructions say you need 2 Pi’s and rapsbian. I can’t find Kodi based instructions anywhere.

I’d like to be able to use my NAS (QNAP T-128) as the server.

I am currently running the last Krypton LE RetroPlayer build and was hoping to use netbook so I can save this image and try the newer Leia builds.