The whole discussion about the whys and hows is in the Shadowrun Editor Wiki in Gamepedia:
https://shadowrun.gamepedia.com/Stealth_%26_Awareness

Original thread in the SRR Forum:
https://psteamcommunity.yuanyoumao.com/app/234650/discussions/0/1747892438663973795/

How to use this UGC as a template:
To save a load of trouble, download the Content Pack here [www.nexusmods.com] and open it in the DFDC Editor. If you want to refer to the data files for items, you need to read them in txt format because the bytes format is unreadable. To do that, use the "Save Project as Source" option in the Tools menu.