subparagraph, the first members shall fill the vacancy by appointing, on a random basis, one of the 2 alternates from such category who was designated under subparagraph (B) of paragraph (2). At the time the first members appoint an alternate to fill a vacancy under the previous sentence, the first members shall designate, on a random basis, another individual from the same category to serve as an alternate member, in accordance with subparagraph (B) of paragraph (2). (4) Special rules for appointment of members appointed by first members The appointment of any of the 9 members of the independent redistricting commission who are appointed by the first members of the commission pursuant to subparagraph (B) of paragraph (1), as well as the appointment of alternates for such members pursuant to subparagraph (B) of paragraph (2) and the appointment of members to fill vacancies with respect to such members pursuant to subparagraph (B) of paragraph (3), shall require the affirmative vote of at least 4 of the members appointed by the nonpartisan agency under subparagraph (A) of paragraph (1), including at least one member from each of the categories referred to in such subparagraph. The 9 members appointed pursuant to subparagraph (B) of paragraph (1), as well as the alternates appointed pursuant to subparagraph (B) of paragraph (2) and the members appointed to fill vacancies pursuant to subparagraph (B) of paragraph (3), shall be selected, if necessary, to ensure that the commission as a whole reflects the demographic and geographic diversity of the State, including racial and language minorities protected under the Voting Rights Act, and that such minorities are provided with a meaningful opportunity to participate in the development and enactment of the State’s redistricting plan. (b) Procedures for Conducting Commission Business (1) Chair Members of an independent redistricting commission established under this section shall select by majority vote one member who was appointed from the independent category of the