Help please: Regarding children being picked up. Would really value some opinions

[Arkellsparkle]

Hello,
I am currently trying to look into an issue that occurred at my setting and how others would handle it.

A mother came in and told me that the father of the child was no longer allowed to pick up their children. She did not tell me why.

What do i do if the father comes and picks up the child? (This is rare anyway)

Also hypothetically what would i do if the father had come in and said the mother cant pick up the child?

Do you have a policy to cover this as ours states that if they are on the registration form they can collect the child so i couldn't stop him really?

Also how would you note down this request?

Thanks for your help.