Section 3178 Of Article 3. Mediation Proceedings From California Family Law Code >> Division 8. >> Part 2. >> Chapter 11. >> Article 3.

. An agreement reached by the parties as a result of mediation shall be limited as follows:
  (a) Where mediation is required to settle a contested issue of custody or visitation, the agreement shall be limited to the resolution of issues relating to parenting plans, custody, visitation, or a combination of these issues.
  (b) Where a stepparent or grandparent seeks visitation rights, the agreement shall be limited to the resolution of issues relating to visitation.