Create Custom Library Parts and Components
If you cannot find the library part you need, you can create your own GDL object. You need not do any programming; a few techniques using familiar ARCHICAD tools lets you draw and save a customized object easily, using regular construction elements as custom building blocks (regardless of their originally intended purpose).
Custom components are sub-parts of library parts, such as doorknobs. These, too, you can create graphically and save for use with existing library parts.
Save Rectangular Doors and Windows from 3D Model Elements
Save Custom-Shape Doors or Windows
Create Custom Components for Doors, Windows, Curtain Wall, Stair, Railing