If both parents are appointed as conservators of the child, the court shall specify the rights and duties of a parent that are to be exercised:

1. (1) by each parent independently;
2. (2) by the joint agreement of the parents; and
3. (3) exclusively by one parent.

Added by Acts 1995, 74th Leg., ch. 20, Sec. 1, eff. April 20, 1995.