Child custody arrangements refer to the legal decisions made about where a child will live and how they will spend time with each parent after a separation or divorce. These arrangements can be formalized through a court order and typically include details about physical custody, which determines the child's living situation, and legal custody, which involves decision-making rights regarding the child's upbringing. Custody arrangements can vary widely, including sole custody, where one parent has primary responsibility, or joint custody, where both parents share responsibilities. The best interests of the child are the primary consideration in these arrangements, often involving factors like the child's age, needs, and the parents' ability to cooperate.