How do I load an LCF file in Archicad?

Go to menu "File" → "Libraries Objects" → "Extract Container". In the window that opens, select the desired container file and click on it twice. The next window will open, where we specify the folder to save the container files. Click "OK". Then this file will just turn into a regular folder with subelements. Then load this folder into the library, just like a normal .*lcf container, or you can just find a .*gsm object and load only it.