How to add a new language

isateesh999,

Languages are features that are enabled by Khoros, after only it will be available for the community to set up localized custom text keys (or the standard ones for a given language). Contact your community Account Owner on the Khoros side for more information in to this.

Here is the list of the Language supported by Khoros community.

https://community.khoros.com/t5/Community-display/Languages-that-Khoros-Communities-support/ta-p/6566