Decisions of the committee shall be by majority vote of the members, including alternates acting as members, present and voting, and a quorum must be present: Provided, That decisions requiring a recommendation to the Secretary on matters pertaining to grade and size regulations shall require at least 10 affirmative votes, at least 5 of which must be from producer members and at least 5 of which must be from handler members and, if the committee is increased by the addition of a public member, at least 11 affirmative votes shall be required, at least 5 of which must be from producer members and at least 5 of which must be from handler members. A quorum shall consist of at least 10 members, including alternates acting as members, and, if the committee is increased by the addition of a public member, a quorum shall consist of at least 11 members, including alternates acting as members. Except in case of an emergency, a minimum of 5 days advance notice shall be given with respect to any meeting of the committee. In case of an emergency, to be determined within the discretion of the chairperson of the committee, as much advance notice of a meeting as is practicable in the circumstances shall be given. The committee may vote by mail or telegram upon due notice to all members, but any proposition to be so voted upon first shall be explained accurately, fully, and identically by mail or telegram to all members. When voted on by such method, at least 14 affirmative votes, of which seven shall be producer member votes and seven shall be handler member votes, shall be required for adoption and, if the committee is increased by the addition of a public member, votes by mail or telegram shall require at least 15 affirmative votes, of which at least 7 shall be producer member votes and at least 7 shall be handler member votes. The committee may recommend for the Secretary's approval changes in the number of affirmative votes required for adoption of any proposition voted upon by means of a mail or telegram ballot: Provided, That the number of affirmative votes required for adoption shall not be less than 10, and in any case an equal number of producer member and handler member votes shall be required for adoption and, if the committee is increased by the addition of a public member, the number of affirmative votes required for adoption shall be increased by 1.