You cannot simply download a "language pack" to change the software's menus from English to German, for example.
Unlike many modern software applications that allow you to toggle interface languages in a settings menu, Archicad handles localization through deeply embedded program structures. There is no "language pack" that can be installed on top of an existing installation to change the user interface . Instead, Graphisoft archicad language pack work
If you want, I can:
Setting dimension units (mm vs. inches) and standards, to comply with local authorities. You cannot simply download a "language pack" to