How to install Kodi on Asustor 302T

Hi guys, have searched and looked around but just cannot find instructions or tutorials on how to install Kodi on my Asustor 302T Nas Drive?

I have been using the old XBMC since i bought the Nas drive from new.

Its hooked up via HDMI to my TV but really want to move up to the Kodi but i just cannot find anything to help me install it? Nothing in the Apps Central for Kodi either?

would really appreciate any input or help on this.

thanks