Correct,
Run a cable from the core to NAC's Eth1 port.
Then in NAC Manager click on the NAC --> Configuration Tab --> Click the "Edit" button under the interface Summary box
![991539b3d6084907a17447acb0f4b874_RackMultipart20170619-20944-e9jwxl-Capture_inline.png 991539b3d6084907a17447acb0f4b874_RackMultipart20170619-20944-e9jwxl-Capture_inline.png](/t5/image/serverpage/image-id/1732i99E1C5D15A723E65/image-size/large?v=v2&px=999)
Even if the client authenticates to another NAC in the Appliance group and the DHCP request is seen on this NAC there is NAC to NAC communication to resolve and populate the information accordingly.
Thanks
-Ryan