x touch switch between xr18 and DAW



I remember seeing somewhere you can switch the x touch between using it as a mixer controller (XR18) and a DAW controller. But I don't remember and can't find it...

Is this possible? I work with ableton live and use the XR18 as audio interface. I need control both over the interface and ableton live, and it would be awesome to do this with 1 controller!