How do I add ancestors to a group tree?

l dog

I was able to add myself and my father when I created the group. I would like to add a great-aunt, but don't see how.

AnneLoForteWillson

You can use the arrows on the Portrait Pedigree to navigate to where she should appear. Then click the + sign to add her.

You can then type in her information or, if you already have added her to your private Person List, you can click on From FamilySearch Tree and find her in your list of living individuals.

See also How do I add new people to a Family Group Tree?