We have created a new role with Role archetype as none,
Context types enabled for system, course and activity module.
Capability permission for creating new course and adding new quiz.
When the user login with the above mentioned role, i can still able to create other activities courses as well like scrom, pdf, url,etc.,
Here my concern is, even though we have given permission for "Quiz" activity type alone, it still allow all the default core activities as well.
So, just need some detailed clarification over this point.