Understanding Society User Support

Hi,

I am preparing to analyse the take up of maternity/paternity leave among parents of children born into UKHLS.
Having looked at the routing for question matlv & matleave, I realised that questions about these two types of leave are either asked of those coded as "newmum" or "newdad", or of females (for matleave).
Newmum/newdad identifies only whether one is a biological parent of a child.
What happens in case of adoption? Are adoptive parents asked maternity/paternity leave question?
By law they are entitled to adoption leave which closely resembles maternity leave.