You can edit a policy to modify existing settings as per your requirements.
To edit a policy:
- Navigate to Configuration Management > Network Configuration. 
- Under POLICIES, click the three-dot icon adjacent to a policy that you want to edit.  
- Click Edit.The EDIT POLICY page is displayed. 
- Make the changes to the policy and click X to save the details in the EDIT POLICY page.  
- Click YES to save the changes.