# Edit individual NGFW Engines

You can change the properties specific to one individual engine element, such as IP address definitions, by editing the engine element.

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For more details about the product and how to configure features, click Help or press F1.

## Steps

1. Select Configuration.
2. Right-click an engine, then select Edit <element type>.
3. Use the navigation pane on the left to find the settings that you want to edit.
4. Edit the configuration information as required.
5. Select from the following:
   - To validate the changes, select Tools > Validate.
   - To validate and save the changes, click Save.
   - To validate and save the changes and refresh the security policy on the engine, click Save and Refresh.
   Note: Validation issues are displayed in the Issues pane. Double-click an issue to return to the section in which the issue can be fixed.