; (B) fix the pay of officers and employees necessary to carry out this Act; (C) distribute business among the officers, employees, and administrative units of the Board; and (D) supervise the expenditures of the Board. (e) Quorum (1) In general Subject to paragraphs (2) and (3), 4 members of the Board shall constitute a quorum for purposes of carrying out the duties and powers of the Board, subject to the limitations in the remainder of this subsection. (2) Party limitation Not less than 1 representative from each party shall be present for a quorum to be established. (3) Chairperson Either the Chairperson or Vice Chairperson shall be present for a quorum to be established. (f) Offices (1) In general The Board shall establish such offices as are necessary to carry out this Act, which may include offices responsible for— (A) operations; (B) science and methodology; (C) review and evaluation; (D) communications; (E) external coordination; and (F) technical assistance. (2) Office for the protection of disproportionately impacted communities (A) In general The Board shall establish an office to review and make recommendations to mitigate and prevent the loss of life, or human or economic injury for vulnerable populations, including populations that may be more vulnerable because of their race, color, religion, nationality, sex, age, disability, English proficiency, economic status, or other demographic characteristic that the Board may determine appropriate. (B) Responsibilities The office established under paragraph (1) shall— (i) provide recommendations to the Board for incidents to review in accordance with section 4(b)(4) that do not otherwise meet the requirements of section 4(b); (ii) determine and maintain a list specific demographic, economic, social, and health characteristics of populations that historically have shown to be disproportionately impacted by incidents