Allison Williams: Child custody is divided into two different categories. There is legal custody and physical custody. Legal custody is decision making authority, who decides the health, education and welfare of the children. Typically, in New Jersey legal custody is going to be joint between the parents. Physical custody, on the other hand, is where the child resides most of the time. Usually, we have a primary custodial parent and the parent of alternate residence who has parenting time. If you and your former spouse share custody, share physical custody, in that circumstance, you would have a parent of primary residence and a parent of alternate residence.