Set Zoom button on Intuos Pro

I'd like to be able to zoom in and out using a function button on my intuos pro table. That way I could zoom in and out without having to take my pen off the tablet or use the keypad. Can anyone tell me how to set a single function key to do this (one for zoom in and one for zoom out). 

  • The shortcut key for Zoom in is Ctrl/Cmd + +. The shortcut key for Zoom out is Ctrl/Cmd + -. To use with an express key, it takes two...assign zoom in to one key and zoom out to another.
    Or you can assign to the touch ring and then zoom in or out depending on the way you circle the touch ring.

    Is this enough information or were you asking how to set up your wacom tablet properties?

    Hope this helps,