Students (attendees) can click on the settings cog icon on the left bottom of the application to bring up the language selection.
and change the interface language of choice:
You can also force a specific language when scheduling a live class that gets loaded for all attendees.
The list of supported languages:
1: 'arabic' 2: 'bosnian' 3: 'bulgarian' 4: 'catalan' 5: 'chinese-simplified' 6: 'chinese-traditional' 7: 'croatian' 8: 'czech' 9: 'danish' 10: 'dutch' 11: 'english' 12: 'estonian' 13: 'finnish' 14: 'french' 15: 'german' 16: 'greek' 17: 'haitian-creole' 18: 'hebrew' 19: 'hindi' 20: 'hmong-daw' 21: 'hungarian' 22: 'indonesian' 23: 'italian' 24: 'japanese' 25: 'kiswahili' 26: 'klingon' 27: 'korean' 28: 'lithuanian' 29: 'malayalam' 30: 'malay' 31: 'maltese' 32: 'norwegian-bokma' 33: 'persian' 34: 'polish' 35: 'portuguese' 36: 'romanian' 37: 'russian' 38: 'serbian' 39: 'slovak' 40: 'slovenian' 41: 'spanish' 42: 'swedish' 43: 'tamil' 44: 'telugu' 45: 'thai' 46: 'turkish' 47: 'ukrainian' 48: 'urdu' 49: 'vietnamese' 50: 'welsh'