CMC is an extension that is used in Winner to manage catalogs. This enables an Admin user to control the conditions of the catalogs and when to make these available to other users to download.
The extension is activated by contacting Compusoft support.
Related articles:
CMC: Catalog Maintenance Component
CMC: How to set up and use the Catalog Maintenance Component
CMC: How to set up customizations without using quick process
CMC: Importing Core Selections using Catalog customization
CMC: Change model name on printouts