A State may extend coverage to designated absolute coverage groups of the State or
            a political subdivision. It may provide coverage for the governmental function as
            a group and for each proprietary function as separate coverage groups. When coverage
            is extended to these designated groups, the State must specifically identify each
            group as a designated absolute coverage group and furnish the effective date of coverage
            and any optional exclusion for each group. Where a State has provided coverage to
            designated absolute coverage groups, the State may, by modifying its agreement, extend
            that coverage to any absolute coverage group in the State. If the State extends coverage
            to selected absolute coverage groups and subsequently decides to cover any of the
            remaining absolute coverage groups of the same entity, (e.g., newly created functions
            or preexisting non-covered functions), each remaining absolute coverage group must
            be included under the agreement as a separate coverage group.
         
          
         It is possible for a State that provided coverage for designated coverage groups of
            an entity to later extend coverage to all its absolute coverage groups. In this way,
            the State provides automatic coverage for the non-covered current employees as well
            as for the future employees of the entity. To do this, the State is required to make
            the coverage uniform for all of the groups involved, i.e., coverage for all the groups
            must be made consistent with the broadest coverage of any of the groups. This "conversion"
            from the coverage of designated coverage groups to the coverage of all the absolute
            coverage groups is accomplished by an appropriate modification to the State's agreement.