This lists available network scan setups. 
Add Network Scan
Go to the Managed Devices :: Auto Discovery :: Network Scan page
Click Add (displays dialog)

Enter Scan ID
Enter IP Range Start and IP Range End
Select Enable Scanning checkbox (expands dialog)

Select Similar Devices checkbox (expands dialog). On Device drop-down, select an existing template (to identify devices)

Select Port Scan checkbox (expands dialog). Enter Port List (ports to be scanned, i.e., 2, 3, 11-20)

Select Ping checkbox (enables Ping function)
On Scan interval (in minutes), enter a value
Click Save
Edit Network Scan
Go to the Managed Devices :: Auto Discovery :: Network Scan page
In Scan ID column, click on the name (displays dialog)
Make changes as needed
Click Save
Delete Network Scan
Go to the Managed Devices :: Auto Discovery :: Network Scan page
Select the checkbox(es) to be deleted
Click Delete
On the confirmation dialog, click OK