OK, I looked at this some more. I reinstalled VE Pro 7 from scratch. It turns out if you don't delete the rosetta apps then in the Local Network list shows VE Pro (Rosetta). If you do delete the rosetta apps. then it lists it as VE Pro Server. I think this is a bug but that's beside the point.
So you have it enabled correctly. Now you also need to quit Logic and VE Pro Server and restart them to have the network search take effect.