Solution
CPanel does not formally release any language packs. You will first have to find
the language pack that you are wanting to install. This can usually be done by
searching CPanel’s forums, located at https://forums.cpanel.net/
After finding a suitable language pack, you can install it by preforming the following
steps:
- Login to WHM as root
- Scroll down to Languages on the left menu bar
- Select Upload a Language file
- Browse your local computer to find the file
- Press upload to upload the file
You should now have the ability to select the language that you uploaded.