Most countries recognize a parent's right to children, called visitation, residence, or contact. Most courts, including American and European, will allow the parent who does not have primary custody (the noncustodial parent) to have specified visitation and access to the child. In America the parents must establish a parenting plan setting out specific details. If the parents are not able to agree, the court may order specific possession and access or may appoint a parenting coordinator to assist the parents. The United States recognizes that parents have a constitutional right to their children (See Troxel v. Granville). In this case the United States Supreme Court stated that "the interest of parents in the care, custody and control of their children--is perhaps the oldest of the fundamental liberty interests recognized by this Court."
In most of the US states there is a law required that court-ordered parenting plans must set forth the minimum amount of parenting time and type of access (i.e. supervised/unsupervised) a non-custodial parent is entitled to have. According to the state laws and court guidelines, the Custody Supervisor cannot change the court order to make major modifications to the amount of parenting time and access, only the minor changes or clarification of parenting time/access schedules or conditions including vacation, holidays, and temporary variation from the existing parenting plan are allowed.