The procedure for forming a Joint Public Service Commission (JPSC) for two or more states is governed by Article 315 of the Indian Constitution. The process begins with the respective state governments agreeing to establish a JPSC. They then submit a proposal to the President of India, who can establish the commission through a notification. The JPSC will consist of members appointed by the President, typically including a chairman and other members with relevant experience. The commission will conduct examinations and recommend candidates for appointment to various public services in the participating states, ensuring a coordinated approach to recruitment.