Additional languages can be updated when you click on the language from the listings you will have the following fields:
Title:The name of the language to be updated is specified here.
Code: The ISO (International Standard Organization Code) for language is specified here. (For example- English ISO code is en).
Character set: The default character set for the language is specified here. It uses UTF-8 for languages that require Unicode.
Display order: If there are multiple languages available then sorting for the language listing can be done from display order. Languages get sorted as per the display order of the language specified.
Direction: All the languages will have left to right setting except for Arabic language that has direction from right to left.
Status: It is possible to enable or disable a particular language. If any of the language is disabled then it will not be used by the system.