Use the lamp tool. For the US library, the objects are in the Lightworks 12 folder. Be sure that you are loading your entire ArchiCAD Library 12 folder, and not just the Object Library 12.lcf file.
Cheers,
Karl
One of the forum moderators AC 28 USA and earlier • macOS Sonoma 14.7.1, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB