To create a DSLB farm, navigate to the DSLB > Farms section and click the Create Farm button. This will display a form with the minimum required configuration for a DSLB farm:

Name. A name that easily identifies the selected DSLB farm from the farm list.
Virtual IP. An IP address assigned to a network interface, configured for the new farm. This IP address will act as the default gateway to balance requests from the Internet or WAN uplinks.
Copy from farm. Use configurations from another farm that you have already created.

Once the new farm details have been entered, click the Apply button.

Next step, configure the DSLB farm properties.