This will allow you to start record in Studio One with your very old keyboard smile
https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=718863
you would just need to set it to studio one rather than Biab, this is easily done.
You can set your keyboard to do any function in studio one by sending the hot key or accessing S1 menus.

Rather than:

winactivate,ahk_class TBandWindow

you will have

winactivate,ahk_class StudioOne (whatever name it users you get by running the windows spy.ahk and clicking on the S1 window will give the name to use)