It simply popps off, If you look closely at the edge of the center of the sterring wheel, at the very top you will see a "joint" where a fairly thin piece of plastic sits upon the tall pillar.. Slip a very thin blade in there and lift gently.
If you need a photo I can do that and E_mail you but I can not post here.
But just the top, like 1/16 inch of the riser is the part that comes off.
Many (roughtly 144) moons ago I upgraded my wheel from "Delux" to "Custom" and thus had to remove the button.
Nothin adds excitment like something that is none of your business
Kenwood TS-2000 housed in a 2005 Damon Intruder 377