All poses should appear in the respective Pose folder for the model concerned.
Some expressions should also appear in their relevat folder.
These expressions are either on or off.
Some expressions also/only appear in the Parameters tab:-
(Select model)>Actor>Posing>Head>Expressions.
These expressions can be dialled in to your liking.
While the 'data' folder is important for these, if you are manually installing any poses or expressions then the contents of the Runtime folder can usually be ignored and skipped.
I would recommend customizing your folders to have things where you can find them, this works best with manually installing things.
If you're relying on smart content then just allow Daz to do it's thing.
Regards, Tomsk.