Best method for modifying item based on Source
 

A setting source I'm planning to add to one of my datasets modifies the weapon proficiencies of the classes adding additional ones (mostly). I'm planning to have the proficiences listed in the right pain of the selector when choosing your class. I'm trying to find a way to ensure that the profciences show up in that pane but all I'm thinking right now is a mechanic that will add tags and/or bootstraps for the proficiencies after the class is selected.

Is there a way to have this show up while they're still things and not picks or would making something like a class helper for each class that is autobootstrapped but only shown/live after a condition is met where the items could be shown via a script based on the source?

If you want to alter them as things, you'll need separate versions for each set of sources.

OK, that's what I thought. Thanks Mathias.

Guess I should have asked one more thing. What do you guys think is best? Making separate versions with different sources or just having some extra stuff assigned if the source is on even though it wouldn't show up in the selection table?

I had forgotten I intended these weapon groups to be picks, so I tested the showtempalte with a description that and had a bootstrap condition put on the other items with the source tag as it's trigger and it shows up just fine, yay.