How to load expansions into toolset?

[ArcturusFyr]

I've recently found a way to modify the main campaign and various other modules to have respawning enemies, but I seem to be unable to access certain other addon's to make the necessary and desired changes. They are as listed;

-Hordes of the Underdark

-Shadows of Undrentide

-Kingmaker

-Witch's Wake

-Shadowguard

 

Everything else seems to be recognized by the toolset, whereas the aforementioned files can't be found even after entering their names into the search-field.

 

If anyone has a solution regarding my problem, please feel free to answer.