How to create multiple render outputs in nuke?

I would like to be able to create 3 different outputs for nuke write nodes, but right now I can only have 1. In settings I have created the different outputs, but I can’t seem to find anywhere to use them. Other than the main one.

I’m also very interrested to know how to do that. This is it user configurable or do we really need to do it in python?

@A-Stroem have you looked at project_settings/global/publish/ExtractOIIOTranscode ?
With this plugin you can output multiple transcodes of the renders.