In 1926, Mason further organized COGIC by authorizing the church's constitution outlining the bylaws, rules, and regulations of the church. In 1933, Bishop Mason set apart five overseers who became the first bishops in the church. In 1945, Mason dedicated the now historic Mason Temple in Memphis as the church's national meeting site. At that time, it was the largest auditorium of any African-American religious group in the United States. In 1951, he set up a "special commission" and selected Bishop A. B. McEwen, Bishop J. S. Bailey, and Bishop O.M. Kelly as his assistants to help with the administration and oversight of the church. In 1952, he added Bishop J. O. Patterson, Sr. to this commission. Also in 1952, Bishop Mason revised the constitution to determine the leadership and succession of the church after his demise.