On the due diligence worksheet for claiming child tax credit, one of the questions asks, "Can the child be the qualifying child of any other person for 2020?"  I have to answer yes and when I do it says stop the taxpayer cannot use that child to claim the child tax credit.

My situation......both parents live together but the father provides more then half the support of keeping up the home so mother techincally can't claim HOH but if both parents agree can she claim the kids for the Child Tax Credit even I I answer no on the worksheet?