Example: bd/bm share custody for education/medical/religious. Bm had child 4.5 days, bd has 2.5.
It just seems like so many times I see ' bm doesn't want the hair cut, just respect that'. But what if, for some reason, bd feels just as strongly about the hair being cut. Or he doesn't want it cut and she keeps chopping it off. I know that's a small example but other ones could be staying home alone, being baptized, or choosing to allow th child to date at different ages.
It seems like bm usually trumps in these cases, but bd should be informed and his day should equally be taken into account.