Switch Hitters question

Does anyone know the answer to this...

Ballpark effects are based on a hitter's stance. One uses either SI L and HR L or SI R and HR R depending on if a player is a lefty or right. That much even I understand.

How does SOM365 consider switch hitters. I am trying to replicate NERP and would need to know, I presume, how a switch hitter is account for in say Griffith '57 which is 15.1.1.16...

thanks for any insight anyone has...

Use SI L and HR L vs RHP, and SI R and HR R vs LHP.

Great thank you