All reasonable steps shall be taken to place siblings entrusted to the care of a local board or licensed child-placing agency, committed to the care of a local board or agency by any court of competent jurisdiction, or placed with a local board or public agency through an agreement between a local board or a public agency and the parent, parents, or guardians, where legal custody remains with the parent, parents, or guardian, together in the same foster home. Where siblings are placed in separate foster homes, the local department, child-placing agency, or public agency shall develop a plan to encourage frequent and regular visitation or communication between the siblings. The visitation or communication plan shall take into account the wishes of the child, and shall specify the frequency of visitation or communication, identify the party responsible for encouraging that visits or communication occur, and state any other requirements or restrictions related to such visitation or communication as may be determined necessary by the local department, child-placing agency, or public agency.