The Picturepark IDS as Identity Provider is managed by Picturepark, while you manage the users in the user management of your Picturpark. In an enterprise, there is often already a user repository in place (e.g. Active Directory) where all users of your organization are managed. To avoid scattered user management, you can add your existing repository. This allows your IT to still update user attributes and access (e.g. leaving employees, new employees) in one central place.