# Editing existing NGFW Engines

You can change the properties of an individual NGFW Engine element or the common properties shared by several NGFW Engine elements.

Existing NGFW Engine elements are shown in the Home view under specific branches. Firewall, IPS, and Layer 2 Firewall elements are shown in the Configuration view under the NGFW Engines branch. Changing the common properties of several engine elements restricts you to actions and values that are applicable to all engine elements at the same time. You can also convert a Single Firewall, a Single IPS engine, or a Single Layer 2 Firewall into a cluster.