Shared custody. Can I declare my child as equivalent to spouse and my ex spouse claim the child benefit amount. How to report on respective returns? Thanks

We share custody of our child. Can we each claim 50% of equivalent to spouse and child tax benefit? How do we individually include shared custody on our returns. Can 1 person claim equivalent to spouse and other person child tax benefit. Once enter dependant automatically calculate child tax benefit and tried to override unsuccesfully.