Article 373-2-9 of the French Civil Code
In application of the two preceding articles, the child’s residence may be fixed alternately at the domicile of each of the parents or at the domicile of one of them. At the request of one of the parents or in the event of disagreement between them as to the child’s mode of residence, the judge may provisionally order alternating residence for a period determined by the judge. At the end…