Quorum requirements for board meetings include virtual participation and limit action when vacancies or interested directors reduce attendance. Quorum rules require a minimum proportion of the Board or a baseline number of directors to be present, with participation by video or audiovisual means counting toward quorum. Continuing directors may act despite vacancies but, if below quorum, only to fill vacancies or to summon a general meeting. Where interested directors form a supermajority, quorum is limited to non-interested directors present, subject to a minimum. Failure of quorum causes automatic adjournment to the same day next week or the next non-holiday, with fractions rounded up and vacant places excluded from total strength.