Lore Warden updated archetype - Redux

[Diaz Ex Machina]

Hello everyone.

As written in this thread I'm looking for a way to make the updated version of the lore warden fighter archetype available even if only the Pathfinder Society Field Guide is enabled in the rulebooks.
I've already contacted the support and they told me that they will take care of this issue, but in the meantime I need to be able to build an updated lore warden without having to use the Adventurer's Guide.
I know that such thing could be possible with the use of the built-in editor, but I've never used it and would need some kind of tutorial or guide to achieve my goal. Can anybody help me with this problem?

Thank you in advance for your help and time.