"Set first beat of bar" key binding/shortcut?

Am I missing something? I can't seem to find a way in the Keyboard shortcut editor (in the Export mode)  to define the "set first beat of bar" as a keyboard command.

I've combed through that menu and can't seem to find it? It would save loads of time in correcting and adjusting grids if that was able to be bound to a shortcut.

My process is: going straight to the 1 of the drop section in tunes and setting grids to that point, then shuffle either way to confirm grid integrity across the song. adjust tempo/shrink/expand as necessary (rarely needed), "C", "M" some memories along the intro, bam, done move on.

I'd like if I could line up the grid with my cursor/mouse and be able to hit a shortcut to set the grid (cuz lets face it, unless it's house music, Rekordbox fucks up grids A LOT)

So someone please let me know if there's a hidden shortcut for this, cuz clicking a UI button is pretty inefficient when you're gridding 100's of songs.