Add VeraLite as secondary controller

So I have a spare VeraLite and would like to add it as a secondary controller to my Vera3 so I can try out the beta versions easily. How the heck do you add a secondary controller? I can’t find any documentation on how to join it to the existing z-wave network and make it a secondary controller.

I finally figured it out. You have to add a generic z-wave device from the controller that will be master, and while it is searching start a copy z-wave network from master controller on the unit you want to be slave.