When multilingual is enabled, a category appears in your cloud control panel.

This category allows you to see the interpreters in your room and the language they are translating in real time, with the option to pause or disconnect them. Connected interpreters are indicated by a red dot as shown below:

The red gauge allows you to change the volume of the translated language to the speakers and audience during the interpretation.

This allows you to lower the voice of the Frencg speaker when the interpreter translates what he says into English. 

Here is a scheme explaining the setting** :

* This setting applies in both directions: when the English speaker is speaking, the volume is reduced for French speakers and the French audience.

 ** This setting applies to all languages available in multilingual mode.