With Node scanning the IP license is coming from the Main unit only.
So as an example Customer buy a 16 IP Penetrator Virtual Software.
And he install 4 Nodes.
Then it allows him to scan local net from the all the 4 nodes but maximum 16 IPs in total concurrently.
So if he scans
20 IPs on the main unit
20 IPs on each of the 4 Units it will 100 Scans it queue in total.
It will still process 16 at a time.
So they can install all the nodes they want using the main unit license on each node.