Unable to manage child's parental controls in Family Sharing

I am the parent/ organizer for my family sharing but it doesn’t show any options or show anything that I can make any changes to my children’s accounts for any parental controls. So when I set up my account on my sons iPhone, I haven’t had any access to it so I’m stuck trying to figure it out to get myself to have parental controls because I didn’t have a iPhone at the time but now I have one. My sons account isn’t on my family sharing account and he has all my parental controls. I want to fix that

and i don’t know how. I tried to reset his iPhone and mine. Still can’t set myself as a parent and organizer. ??