I don't understand button placement...no matter what I do the button doesn't show after its placed.

You scroll to switch between frames and place it on the frame where you want it. It's important to select the right frame because it will be shown and hidden together with that frame.
You can just put it on the worldframe, then it will definitely show.

I had this issue too, but after reading your instructions just now I understand how to do it and your addon works perfectly. Very clever how you pick which frame you want it to hide and show with. Thanks.