Generate Domain Networks

SSMIC3038

I've starting deploying the ESRI utility network asset packages in test environment for learning, just wondering how I can deploy these UN packages as individual domain networks under a single UN. Right now I can deploy water, electrical, etc as individual UN's but how to deploy as individual domain networks under a single UN?

Thanks

SSMIC3038

Someone from ESRI please??

Utility Network is hailed as being able to combine disparate networks (water distribution versus electrical distribution) under a single network so one can initiate an electric trace and see the water distribution impacts as part of that trace.

So, given the asset packages available right now, how does one generate these under a single UN as separate domains?