Multichannel Auto Split?

New user here, coming from Audition, primarily audio post

I see that the Auto Split function is the way to split stereo interleaved into multi-mono, but it does not seem to work for multichannel files. Am I missing something here?

This is not the right tool to use. You should render using one of the following formats to achieve what you need.

In that context, I think the OP can also use batch processor with the above-mentioned settings.

Yes, he can either do that file by file or in the batch process.

I do not see the option to render Multi Mono in the Render dialogue, nor do I see this in the Batch Process.

I do however see the option to create new audio files that are multi mono.

I figured it out - it is in the Save As / Format dialogue

Batch processor:

Render Ribbon Tab: