How do I change the function/position of these EPDM buttons on the flyout?

Back with SWX 2008, I had these two buttons (check-in / check-out) reversed in position and function.  To me, it makes more sense to check something out to me pointing toward my PC (i.e. pointing into the box).  Checking-in puts it away, from my rig.  I can't seem to find how I customize these buttons.

What am I missing?