1. On iTunes Connect, go to "My Apps".
2. Click into the app that you'd like to add translations to.
3. Under "iOS App", click on the "English" drop-down menu. Simply select the language that you'd like to edit the translation. If a language is not activated yet, click on the "Add" button next to that language and you'd be able to add a translation for that.
4. Input the translated metadata for your chosen language.
For a list of iTunes App Store supported languages for metadata, please kindly refer to our FAQ "List of iTunes App Store supported languages for metadata ".