Tasks related to identity of Portal Server users are provided by Access Manager, not Portal Server. Administrators use the Access Manager administrative console to perform the following tasks:
Manage identity-based objects, including users, roles, and organizations to administer and assign appropriate access to users according to roles they have within organizations or suborganizations
Delegate administrative functions to specific end users by authorizing the end users to administer organizations, suborganizations, users, policy, roles, and channels
Reset administrator passwords, in the same way other passwords are changed