The knowledge base article below will help you to clone an existing zone on the SonicWall firewall.
In the first place you need to make sure that you are on Config mode.Â

After that we will need to navigate to Network, and then to Zones.

Hover the mouse pointer over the zone that you wish to clone. Three buttons will be showing up. To clone the zone you have to select the one in the middle.

If you still require assistance, please contact Technical Support
There are two ways to contact technical support:
1. Online: Visit mysonicwall.com. Once logged in select Resources & Support | Support | Create Case.Â
2. By phone: please use our toll-free number at 1-888-793-2830. Please have your SonicWall serial number available to create a new support case.