I can see only the option to create a layout and then use Super+ALT+L
to open the layout selector and then clicking on it, or hitting Enter. Not sure if there's a simpler way.
The only other possibility is to enable the "Resizing & moving windows to a custom grid" option, which has the "Tile all windows to grid" option with CTRL+Super+A
. But that has no fine-grained control as far as I can tell.