In this video tutorial I will show you very quick method on how to create multiple language versions of Revit.
Find the Revit icon on you desktop. Right click and select properties.
Modify the path by changing the language code. All language codes you may find here: https://autode.sk/2UhzaFt
Click ok. Now the Revit interface should be in the selected language.
Tip: You can also create multiple versions of Revit by simply duplicating the Revit icon and applying a revit language code.