Can you share joint custody with a family member besides the children's biological father without his consent?

No. Only parents are granted custody of their children by a court order. You cannot assign custody to a non-parent nor will the court. When a party other than the parent gets "custody" of a child it is done via a guardianship and must be obtained through a court. The person who requests the guardianship is appointed the child's legal guardian, the child is deemed the guardian's ward, and the case will remain under the jurisdiction of the court. There can be no guardian appointed if a parent has custody.

No. Only parents are granted custody of their children by a court order. You cannot assign custody to a non-parent nor will the court. When a party other than the parent gets "custody" of a child it is done via a guardianship and must be obtained through a court. The person who requests the guardianship is appointed the child's legal guardian, the child is deemed the guardian's ward, and the case will remain under the jurisdiction of the court. There can be no guardian appointed if a parent has custody.

No. Only parents are granted custody of their children by a court order. You cannot assign custody to a non-parent nor will the court. When a party other than the parent gets "custody" of a child it is done via a guardianship and must be obtained through a court. The person who requests the guardianship is appointed the child's legal guardian, the child is deemed the guardian's ward, and the case will remain under the jurisdiction of the court. There can be no guardian appointed if a parent has custody.

No. Only parents are granted custody of their children by a court order. You cannot assign custody to a non-parent nor will the court. When a party other than the parent gets "custody" of a child it is done via a guardianship and must be obtained through a court. The person who requests the guardianship is appointed the child's legal guardian, the child is deemed the guardian's ward, and the case will remain under the jurisdiction of the court. There can be no guardian appointed if a parent has custody.

No. Only parents are granted custody of their children by a court order. You cannot assign custody to a non-parent nor will the court. When a party other than the parent gets "custody" of a child it is done via a guardianship and must be obtained through a court. The person who requests the guardianship is appointed the child's legal guardian, the child is deemed the guardian's ward, and the case will remain under the jurisdiction of the court. There can be no guardian appointed if a parent has custody.