Options - Preferences - Audio tab - Drivers button

Click that path, then select evreything listed for input (by highliting each one) and THEN record onto a (blank) stereo track in RB.

You should get a bunch of tracks that show each driver and what it is receiving. RB 'automagically' records each enabled driver to its own track in series and in the order (from top to bottom) of the enabled drivers from the Drivers window you just visited. If you enable them all, we can see where the signal is going.

Drivers 'drive' devices so this is how you select devices (and inputs) in RB.

I do not work here, but the benefits are still awesome
Make your sound your own!