BPM

I am trying to to associate an existing workflow model as a component model to an existing business process. The only option though is to create a new 'Workflow model'. Is there no way to associate an existing workflow model as a component model of a business process ? See attached screen shot. Cheers, Prakash

I am new to provision and I am looking for a notebook that I could use as a guide/template to produce the different artifacts for dodaf v2