I was looking to split my Debian desktop screen, tile my windows the way I want. Here is how I got it done.
Launch Windows Manager, click on Keyboard.
Scroll down via the 'Action' column to the "Tile Window" settings.
To set the "ShortCut setting", double click on each Action and Press your shortcut key-combination.
Note: Control+Super+Left....where Super is the Windows-Key
Here is my desktop view: firefox on the left and chrome on the right