A security group is the grouping of a set of related security identifiers. This level in the security hierarchy allows an administrator to group the large number of security identifiers into a smaller number of manageable groups. Any users who have a specific security group assigned to their security role will have access to all the resources represented by the security identifiers belonging to the security group. For example, users are authorized to register a person when their security role includes the security group which includes the register person security identifier.