This module defines two new layout modifiers: centerMaster and topRightMaster. centerMaster places master window at center of screen, on top of others. All other windows in background are managed by base layout. topRightMaster is like centerMaster, but places master window in top right corner instead of center.

Yo can use this module by adding folowing in your xmonad.hs:

 import XMonad.Layout.CenteredMaster

Then add layouts to your layoutHook:

 myLayoutHook = centerMaster Grid ||| ...