Article 39 International Covenant on Civil and Political Rights (ICCPR)
1. The Committee shall elect its officers for a term of two years. They may be re-elected.
2. The Committee shall establish its own rules of procedure, but these rules shall provide, inter alia, that:
(a) Twelve members shall constitute a quorum;
(b) Decisions of the Committee shall be made by a majority vote of the members present.
See also: Article 38 ICCPR