Show Cue System

I would like to send audio (and audio from video) to the output of my Focusrite Saffire interface (SCS 11.7.0).
I can do this to the on-board (cpu) with 7.1 setup.
I must be missing something on how to set this up.
Thanks, Tom

I don't know much about this interface, but the drivers for some external interface devices require the use of ASIO to support more than a single stereo output.