L-in-J on "[Plugin: Related Posts by Taxonomy] Can I show posts related by custom taxonomy term but only from one category?"

Sorry I've been away from working on this for a while.

What I need is to be able to show related posts that are related by a specific taxonomy, which I can do now, but then I also need to be able to exclude categories (or include only one category in this case).

Another example besides the "sets" example can be seen on the same page, http://port-sebastian.com/kiersten-and-abbeys-road-trip/. If you go to the tab that says, "Click for more about characters / dolls / sets in this episode" and look at "Characters appearing in this episode", I am wanting this to show only posts that are related by my taxonomy "character_names" AND are in the category of "character-bios". (This is also retuing results from categories "episodes" and "businesses-employers" that use the same character names. The "character-bios" posts are the three showing dolls' faces.)

I see that your shortcode options include exclude_terms, include_terms, and exclude_posts. Is it possible to add something like 'include_categories' and 'exclude_categories'? I think that would solve my problem.

Thanks!