# Editing existing Security Engines

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

Existing Security Engine elements are shown in the Engine Dashboard view under specific branches. Engine, IPS, and Layer 2 Engine elements are shown in the Engine Configuration view under the 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 Engine, a Single IPS engine, or a Single Layer 2 Engine into a cluster.