pre-sales question

hi, some I’ve got some questions after a search in the forum.
is it possible to list users by custom role? is it possible to limit the registration roles for an specific role (who has permits to registrate users)? is it possible to list the orders made by some specific user? and the orders made by all the users with the same role?
The plugin has lots of features that I may need but I couldn’t find any answers for those features I need.

thanks!