Proposed amendments to the Schedules of Administrative and Procedural Provisions annexed to this Agreement shall be put to the vote. Each Contracting Party to the Agreement applying one or more UN Regulations shall have one vote. A quorum of not less than half of the Contracting Parties to the Agreement applying one or more UN Regulations is required for the purposes of taking decisions. For the determination of the quorum, regional economic integration organizations, being Contracting Parties to the Agreement, vote with the number of votes of their member States. The representative of a regional economic integration organization may deliver the votes of those of its constituent sovereign countries which apply one or more UN Regulations. Draft amendments to the Schedules of Administrative and Procedural Provisions shall be established by unanimous vote of those present and voting.