Va. Code § 13.1-992
The board of directors, by a resolution adopted by a majority of the directors present and constituting a quorum at any meeting, may designate five or more directors to constitute an executive committee which, to the extent provided in such resolution or the bylaws of the corporation, shall have and may exercise all the authority of the board of directors except the authority to approve an amendment to the articles of incorporation or a plan of merger. The executive committee specifically shall have the right to make calls upon the membership under § 13.1-989, unless expressly provided to the contrary by such resolution or bylaw. Such committee shall have the power to fill any vacancy occurring in the board of directors or in the executive committee. Such vacancy shall be filled by the affirmative vote of a majority of the remaining members of the executive committee, though less than a quorum of the committee, unless expressly provided to the contrary by such resolution or bylaw.
Va. Code § 13.1-992