All Channel Pre/Post

Is there a way to set all channels in a given mixbus to either Pre or Post without having to manually set each channel.

For example, I setup an aux that will be used for a stage wedge. With that, I know I want most every channel to be a pre-fader send to that aux. Is there a way to do that I may be missing?

Have you found the “pre” button on your surface? There is a wonderful manual for all surfaces, that will explain its function in every detail!