Miss. Code Ann. § 43-33-49: Miss. Code Ann. § 43-33-49

The exercise by a state public body of the powers herein granted may be authorized by a resolution of the governing body of such state public body adopted by a majority of the members of its governing body present at a meeting of said governing body, which resolution may be adopted at the meeting at which such resolution is introduced. Such a resolution or resolutions shall take effect immediately and need not be laid over or published or posted.