EPM Provisioning when using an external user directory

Question

I intend to use an external user directory, probably MSAD.
Now from what I understand provisioning is done within native directory. How do I get the users which exist in the external user directory to show up in native directory OR how do I go about provisioning users who exist in the external user directory?

Answer 1

I did see that link, and while I understand what needs to be done to configure the external user directory, my confusion is this:
Once the external user directory is configured, I will see the users in shared services under the section "OID" or "MSAD" in user directories. That is fine. Now I want to provision and start assigning hyperion roles such as administrator, planner etc to the users. As per the documentation, only users in native directory can be assigned provisioning. However, I seem to be able to right click on a user under MSAD and provision it.
So my confusion is, it seems that I can provision users listed under the external directory. So why does documentation say provisioning is done to users in Native directory. If that is indeed the case, then how do I get users in external directory into Native directory within Shared Services?