Can I snap windows to three columns?
When I drag a window in Ubuntu 21.04 I can snap it to the left or right side of the screen (or by pressing Super+←, Super+→). Can this be configured to support three columns (e.g snap to middle), and two rows without a tiling manager?
This is not possible on a vanilla installation.
If you are really not interested in a tiling window manager, I would suggest a GNOME extension called WinTile.