Qu24 USB B streaming during live performing

Is it possible to USB B stream on QU-24 while playing live? When I select channels to go to USB B stream, obviously it takes the source off of local and I get no sound from a mic in FoH. Is there a way to stream and have the local input? I’m in a church setting, so I need to have both FoH and stream.

At our HoW I use a mix (mix 9-10) that is set to post fade except for a line for the ambient mic, and a line for the piano. That way the streaming mix is controlled by the FOH mix, except for the piano and ambient, neither of which need to be in the Mains, but are piped into the streaming. Initially set all the post-fade channels at unity; adjust up or down as needed to get the streaming mix desired.