Mapping a shortcut for ctrl+option+fn+shift+left/right

Hi!

I would like to create a shortcut to automatically tile windows, splitting them vertically and push the focused window to any side the screen(left or right), as seen by the "Fill & Arrange" feature in Sequoia.

The default shortcut for this is ctrl+option+fn+shift+left/right but I am unable to recreate this in BTT. I am trying to set option+t for this.

I tried using Frontmost windows side by side action option but the windows get pushed to the opposite direction and wiggle instead.

Any help apprerciated! Thanks!