@subtledoctor, thanks for the heads up and appreciate the response! I found the right place, just kind of a convoluted route in the location. I managed to pull up NI (the name it pulls up with is "Baldur's Gate: Siege of Dragonspear" for some reason, after selecting the chitin.key)
The Save (after PRVZ) didn't show up initially as it's filed under my iCloud Drive documents, so I guess the Mac/BigSur filing system makes it more convoluted.
Sorry for getting into the nitty-gritty, and if there's another resource that gets rudimentary on doing mundane things feel free to let me know.
A couple of the points I was looking on was changing weapon proficiencies and HLAs.
1. Is the only thing I need to add proficiency points in something is change the "# of stars : Active Class:"? To add a whole new proficiency class can I just copy and paste the (233) line and simply change the proficiency category? Or are there other values that I need to edit in order have the game run properly? I see most of the information between the proficiencies look the same but I notice the offset numbers are different. Do I need to worry about adding lines like the "...Set Local Variable" when I change proficiencies? Also, do the bonuses for THACO, etc. automatically follow the setting of the proficiency or do those need to be changed themselves as well?
2. In BG2ee, how does one go adding the Use Any Item ability to a character? Any equivalent in BGEE?
Sorry if a lot of the above is obvious for many, I have no background in programming, etc. so kind of flying blind in an unknown land.