How to add a sibling to a MOTHER in a tree (not an additional child as sibling)
I want to add a sibling to a tree or a person. But I can't seem to get that option. The help directs as to how to add an additional child (sibling to other children). I'm trying to add a sibling to a mother (with an unknown mother and father). Specifically, I want to add my grandmother as a sibling to a tree that her sister is shown in.