USB recording of Aux outs

So to summarise recording capability-

SDCard = Multitrack – SDHC, 32 GB max, UHS-I Speed class 10 – (On CQ-18T) – max 24 user selectable channels/Auxs/Main Outs)

USB Stick = Stereo – Can record mains out only – 48k 24 bit Signed Stereo WAVS

Can I request a feature to record Out 1/2 mixes or similar as an option to USB?

To answer my own request - it looks like this can already be done.
From the manual “Choose the channels assigned to Stereo L/R for recording in the CONFIG /
USB/SD/BT (symbols) / USB/SD screen” - this gives options of Mains, Outs 1-6 of teh Fx channels.