Domiciliary Custody: Once a joint custody has been declared, then usually one parent is named the "domiciliary" parent and that is where the child actually lives. The other parent who is the non-domiciliary parent is still a joint custodian and has complete and unfettered access to medical records, school records, and must be recognized and included by the domiciliary parent in decision-making.
This form is a generic example that may be referred to when preparing such a form for your particular state. It is for illustrative purposes only. Local laws should be consulted to determine any specific requirements for such a form in a particular jurisdiction.