Some time ago I asked a question on stack overflow about adding new commands to the notion window manager. These commands split the entire workspace, adding a new frame to the bottom or side of it. Here is a link: http://stackoverflow.com/questions/24494725/splitting-workspaces-in-the-notion-window-manager
In cfg_tiling.lua add
kpress(META.."Z", "WTiling.split_top(_, 'bottom'):goto_focus()"),
inside the "defbindings("WTiling", {" block and add
kpress("Z", "Wtiling.split_top(_, 'left'):goto_focus()"),
inside the "submap(META.."K", {" block
It sets up META..Z and META..K + Z as the key bindings for these actions.
After setting these up on my Dell precision 4600 only META..Z seems to work and the focus is not moving to the new frame.