Jitsi-meeting in webcast


In a few weeks we will have a webcast of a panel discussion. At least one of the panel member cannot come over but wants to attend via Zoom/MS-Teams. I prefer Jitsi, but how to do it?

I can create a meeting with the panel-member(s), moderator, and the webcaster(me). I enter the video/audio of my computer into the webcast system and switch when needed. This should work but I see one major problem: the sound of the moderator enters the webcast at two point: Directly via my webcasting system and via Jitsi (microphone of my laptop).

Does anyone know a better way to do this?