Now that you have tile groups, it would be nice if you could move them around. For example, my setup currently looks like this:
However, if I just press the CTRL key and then swipe up on the trackpad/screen or zoom out with my mouse wheel, everything will shrink and then you can drag and move the entire group of tiles.
Now the start screen looks like this with the two column tile group moved over to the right:
"Computer Tips: Rearranging Tile Groups in Windows 8"
Reference : online-tech-tips.com