If there is a custody action filed with the court, then there is court ordered custody mediation for both parents.
In the court ordered custody mediation, the only people that attend besides the mediator are the two parents. Attorneys are not present.
Each county or judicial district has a custody mediation office with a group of custody mediators (or just one mediator in the smaller districts) who will mediate each custody case.
Since custody mediation is court ordered any time there is a custody action filed, there is no charge.