BigMarker's built in system should translate the website and webinar room based on your browser's language setting or version. However, you can also manually change the language settings on the website and in the webinar room.
Within the lefthand side panel
Scroll to the bottom of the page. Click Language located in the lower left hand corner. Then choose then select your preferred language from the pop-up menu.
Inside the webinar room
Just click More in the right hand corner to choose the language you'd like the webinar room displayed. Once changed, the room will read and chat in that chosen language.
This is an individual setting. Hosts cannot change the language for the entire room.