Davinci 17 proxy audio channel settings?

Hi, I'm only using Davinci to run out proxies to hand off.

I'm not finding any settings for audio in the new proxy workflow. Is there any way to specify "same as source" for the audio channels like you can with the optimized media workflow?

The only setting I've found that seems to have any bearing on proxy audio is the "Timeline Sample Rate" under Project Settings - Fairlight.

Am I missing something?

I'm confused.

Optimized Media offers no such audio settings. (Nor does Proxy, but that's no surprise.)