It's super easy to turn on Closed Captions or Alternative Language Subtitles in the Virtual Kinema.

In the Virtual Kinema hover over the 3 dots in the bottom right of the video player and click on Captions. The same icon is available in the Offline Player (for in-person screenings).

You can now turn on Captions by selecting the language of choice. If there are many languages available, you may need to scroll.