net rendering only render elements?

what is the way to send only the render elements to the render farm ?
the “render only elements” button works on a single frame only,right?

i need to send some passes fast without the diffuse pass taking its time…

thanks!

Edit: Link no longer valid. Replacement:

https://coronarenderer.freshdesk.com/support/solutions/articles/5000518663-string-options

(bool shading.enable = false)

Good luck!