Multi-language feature allows you to more than one variation of all your pages / posts. Users can switch between languages, and your content would automatically switch to the chosen language version. Some of our themes that are compatible with multi-language feature:
WPML is the most popular multi-language plugin for WordPress. The plugin is premium and NOT included in our theme package. Please purchase the plugin and install it on your website.
You should also install the WPML addon: WPML String Translation plugin which would help you add multi language version of each theme's translatable text.
If your website has WooCommerce integration on, you can optionally integate your WooCommerce with WPML by installing WooCommerce Multilingual - run WooCommerce with WPML plugin.
For further documentation about how to use WPML, please read their documentation which is available here.