Tell vCAC not to power on machine

Is there any way that I can configure vCAC (5.2 or 6) to not power on a machine once it's created the container.

I've got a basic vSphere blueprint Server, Create, BasicVmWorkflow and I'm using it to create empty shells so I can do custom os provisioning to them at a later time.

I'd like to control power management myself (likely from vCO), but allow vCAC to create the container and mount boot media to the cdrom drive during the execution of BasicVmWorkflow.