Click the "Add" button and navigate to your new folder.
If your download is a .zip file, extract it to a dedicated folder on your hard drive (e.g., Documents/ArchiCAD 12 Customs ). archicad 12 library download new
The community often shares "legacy" packs. Search for "Standard Library 12" if yours has become corrupted or lost. Click the "Add" button and navigate to your new folder
Go to File > Libraries and Objects > Library Manager . archicad 12 library download new