Editing the feature definition in open road.

Hello All, 

I am using crash barrier feature definition to show the crash barrier along the road edges which is already existing in ORD but the foundation details are mission in this feature definition.  I want to edit this feature definition and to add the foundation details to it,  how can I edit the feature definition?  Or how can I create new feature definition? 

Kindly guide.  I am using latest version of ORD. 

Thank you. 

Regards, 

Aniruddha