I have a grandfather https://www.geni.com/people/George-Wilson-Sr/6000000006150370125
He has a sister https://www.geni.com/people/Callie-Mangum/6000000006150272195
When I try to add a sibling to the Wilson record, I add Callie Mangum's name and birth date information, but I get a brand new sibling record that has nothing to do with https://www.geni.com/people/Callie-Mangum/6000000006150272195
Nor do I see a way to specify the exact one I want?
Can you help me link https://www.geni.com/people/Callie-Mangum/6000000006150272195 as a sibling to https://www.geni.com/people/George-Wilson-Sr/6000000006150370125
Thanks!