Storage of Roles and Worksets in the Portal Catalog 
The Portal Catalog is shipped with a predefined structure and with predefined initial content. This initial content includes the pre-configured administration roles. For more information about the administration roles see Pre-configured Roles.
You enhance the structure of the Portal Catalog as needed. Consider where in the Portal Catalog you would like to store your objects and create the required folders. You then create roles and worksets in these folders and access the folders for editing.
For more information about working with the Portal Catalog see Portal Catalog.
You can assign administration permissions for all the folders you create in the Portal Catalog. For more information see Portal Permissions.