Workflow for importing plan roundabout geometry into Inroads SS2

I am using Inroads SS2 and have created some roundabout geometry using the Inroads Roundabout tool. 

I now need to import this geometry into inroads so that I can start using it for my point controls for my templates. This is where I am getting stuck. I am not sure what the best and most automated way to do this is. 

Also, once in inroads, I am looking for a workflow to guide me in creating templates that would work to create the final roadway surface while still showing the roadway sub-base so that I could calculate volumes.  Basically I need some advice on what the best way to model a roundabout in Inroads SS2 is. 

Any advice, suggestions or guidance would be much appreciated. 

Thank you in advance,

Dennis