Knowledge Workflow

I have copied the OOB Knowledge workflow and renamed it to xxx-Knowledge.  I am having trouble finding where in the Knowledge management to apply the new workflow.

For Incident, Problem, and Change I cna go into that module and go to Configuration and then (Inicdent, Problem, or Change) Categories and there is a field there to select what workflow to use. 

I do not see that option for Knowledge > Configuration > KM Document Categories.

I've also looked under the other options under Knowledge > Configuration and don't see a place to update to a differrent workflow.