WordPress makes it possible for users to change the admin language. This allows different users with profiles on your site to see the WordPress admin in their own languages.
Admin Language is Independent of the Site’s Front-end Language
When we talk about the site’s language, we always think about the front-end language – the one visitors see. However, there’s another case – the WordPress administration language.
Since WordPress version 4.7, different users can set their own preferred admin language using the native WordPress language selector. This way, they see the WordPress interface in their language and can more easily manage content.
To be able to set different administration languages, you should first install translations for WordPress into different languages. WPML does this for you and auto-installs translation for WordPress itself.
How Users Set their Administration Language
To choose their own administration language, users should go to the Users → Profile page and use the Language option in the Personal Options section.
The site’s main language is selected by default. Click on the drop-down to see the other available languages in the site.
Convenient Content Editing for RTL/LTR Sites
When you edit content, it is important for the WordPress administration to be displayed in the same direction (right-to-left or left-to-right) as the content. If you are editing RTL content (Arabic, Farsi, Hebrew, etc.) and the WordPress administration displays in English, editing may be difficult.
WPML has no setting of its own for this. The WordPress admin follows the language each user chooses in Users → Profile → Personal Options → Language: pick Arabic there and the admin shows in Arabic, arranged from right to left; pick English and it shows in English, from left to right.