Use the Family Editor to modify a lighting fixture family to change the design of the fixture or to define its light source.
To modify a lighting fixture family
Lighting Fixtures. Right-click the name of the lighting fixture family to modify, and click Edit.
Open
Family. Navigate to the location of the lighting fixture family (RFA) file. Select the file, and click Open. The Family Editor opens, displaying the lighting fixture family in the drawing area.
See Family Editor.
Lighting panel

Save. See Loading Families.