Legacy supports linking to multiple parents. This lets you track adoptions and other parent-child relationships. To add an additional set of parents to an individual, begin my moving the person to the Husb or Wife position on the Family View or the current position on the Pedigree View. Next, right-click on the person’s name and then choose View / Parents List from the popup menu. The Parents List appears.
If you want to add a new set of parents that are not yet in the Family File, press the Add New Parents button on the lower left. A new set of parents, both named "Unknown", appears in the Parents List. You can then use the Edit Father and Edit Mother buttons to fill in their actual information.
If you want to add additional parents by linking to an existing couple, press the Link to Existing… button and choose the parents from the Marriage List.