The Compatibility section contains the IntelliSense compatibility options. This section contains the following options pages:

Options page Description
Catalog Specifies the availability of IntelliSense completion providers.
IntelliSense Contains options for CodeRush Classic interaction with IntelliSense.

This product is designed for outdated versions of Visual Studio. Although Visual Studio 2015 is supported, consider using the CodeRush extension with Visual Studio 2015 or higher.