Multiple language is extra paid features
1. Setting main language: Main language is default language of Joomla, main JB Tour content language will be the current content
2. When user installs new language pack for Joomla, the translation icon will be showed at Jb tour listing. User click icon to translate content for each language
3. Frondend configuration
Using the Joomla module language switcher to display language selection.
4. Language configuration is inherited from Joomla core