Hello,
the fast way to enroll site server is:
1)Add site server in console
2)Full policy & membership update
3)Update client policy on site server
4)wait while all plugins will be installed(agent will restart 1-2-3 times, it depends from quontity of plugins that must be installed)
5)Send basic inventory
6)wait a little
7)Full policy & membership update
8)Update client policy on site server
9)check that all site server policys applied(task and package server)
I'm using this procedure for quick site server enrollment, if all is right with the network bandwith it will take near 10-15 minutes to install site server components and to download packages.