Is it possible to add evaluation for Specialisation?

Hello,

We are building a specialization and would like to add an Evaluation to allow learners to assess the specialization as a whole, but not a specific part related to the course,  

In the list of actions that can be added, I see only: add an activity that is a course or section.

I believe that it is not yet possible to add evaluation as a separate activity to the specialisation, am I right?