Multiple simultaneous presenters?

Hi Andreas1001 with a Teams live event it's not possible to include content plus two separate video feeds (one for presenter, and one for the interpreter).  I believe you'll need to set up the live event as described here with an encoder.  An encoder is something that is commonly used to splice together various inputs (mics, cameras, etc) into one feed for the livestream.  

https://docs.microsoft.com/en-us/stream/live-event-overview 

You can set this type of event up either in Stream or in Teams by choosing the second live event option (to use an encoder).