If you go to the Object Settings Dialog and search for the given file on BIMComponents.com, it will find it and you can download it. The reason this is good is because it will download it and add it to your Embedded Library at the same time.
If you place the Object, then you can select it and use the File\Libraries and Objects\Open Object command to open it for editing (CTRL+SHIFT+O).
Loving Archicad since 1995 - Find Archicad Tips at x.com/laszlonagy
AMD Ryzen9 5900X CPU, 64 GB RAM 3600 MHz, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), Windows 10 PRO ENG, Ac20-Ac28