How to switch language of the live caption?

Hi everyone. 

I am doing research interviews on Zoom. the live subtitles and transcription are really useful. However, I need to transcribe multiple languages of English, Mandarin and Cantonese. I know Zoom can only detect one language by setting. I spent hours to do the research  but find nothing. 

I found this https://support.zoom.us/hc/en-us/articles/6643177746829-Viewing-captions-in-another-language, but it does not work in practice as there is no "Speaking Language: English" menu to select the appropriate language the captions should be generated from.

I saw Zoom supports multiple languages in other functions but i could not find how to switch the transcription/caption language. anyone can help? Thank you! 

here is what i found online:

Changing the speaking language for captions

If the speaker is presenting in another language, you can change the language the captions are generated from. By default, English is set as the speaking language the captions are generated from. If the presentation you are viewing is in another language, for example French, you can change input language so that captions are generated more accurately in French.

1. Next to the Show Captions button, click the 
    

    

    button.
2. Click the Speaking Language: English menu and select the appropriate language the captions should be generated from.
   Once selected, captions will be generated based on the language chosen.

Notes:

• This only changes the language the captions should be generated from. This does not provide a translation into another language other than what the presenter is speaking.
• Choice of Speaking Language will be saved and applied to future meetings