be appointed only for the remainder of such term. A vacancy in the Board shall be filled in the manner in which the original appointment was made. (3) Chair The Chair of the Board shall be the Associate Administrator of the NTIA for Policy Development and Cybersecurity. (4) Compensation The members of the Board shall serve without compensation. (d) Subcommittees (1) Authority Subject to the approval of the Under Secretary, as the Under Secretary determines necessary for the performance by the Board of the duties described in subsection (b), the Board may establish subcommittees, working groups, standing committees, ad hoc groups, task groups, or other subgroups of the Board. (2) Limitation Any subcommittee, working group, standing committee, ad hoc group, task group, or other subgroup of the Board established under paragraph (1)— (A) shall report to the Board