Starting from version 4.2.0, WPL provides RTL support for Arabic and Hebrew languages.
If you want to use one of these languages for your website, you just need to go to the WP admin panel->Settings->Global->Site Language and choose Arabic or Hebrew language.
The WPL backend and frontend views will be changed to the RTL version automatically.
If you want to create a WordPress multilingual website, then check this article: How to create a multilingual WP website using WPML plugin