Interpretation: mute original audio not possible!?

[cipraint]

Hello!
So: we had and have another a meeting with interpretation in three different languages (also two interpreters per language channel who take turns).

The problem: the interpreter, who wants to translate something from another interpreter, hears also the original audio of the sepaker - which is chaos, because he hears two people talking at the same time in almost the same volume. As a pnormal praticipant you have the button "Interpretation" and "Mute Original Audio", but not if you are assigned as an interpreter! So how can an interpreter mute the original?
I need help urgently, because we have another meeting coming up soon...

Thank you!

Caroline