The CMB-S4 collaboration bylaws were developed in 2017/18 under the auspices of the Interim Collaboration Coordination Committee, and adopted by majority vote after review and refinement at the March 2018 collaboration meeting. Amendments to the bylaws may be proposed by the Spokespeople or any Governing Board member. Proposed amendments must be approved by a supermajority of the Governing Board and subject to a month-long collaboration review. Minor amendments may then be ratified by a supermajority of the Governing Board, while major amendments require ratification by a majority of the voting members of the collaboration.
The current bylaws are available here (adopted 11/24/2024).