Mississippi Code Title 11. Civil Practice and Procedure § 11-51-21

If the parties summoned to join in the appeal desire to do so, they must comply with the requirements to perfect an appeal as if they had appealed in the first instance, or they shall not be allowed to join in said appeal. Such compliance shall be made within the time required by the Supreme Court, and if a supersedeas bond be filed, may be approved by the Clerk of the Supreme Court, or the clerk of the court from whose judgment the appeal was taken, and certified and filed in the office of the Clerk of the Supreme Court.