To enable live captions: Click on the "subtitles" icon, indicated with a CC, in the player and turn on captions. You may need to select a language option. Directions may vary by device or viewing mode.
To view the live broadcast in full-screen mode in your browser: Click on the "fullscreen" icon, typically found at the bottom of the player. (Depending on your device, you may be able to view the stream in portrait or landscape mode.)