To mark an Archetype content types as Featurable, add this into configure.zcml if your policy product:

<class class="Products.ATContentTypes.content.document.ATDocument"> 
   <implements interface="wcc.featurable.interfaces.IFeaturable"/> 
</class>

For Dexterity content types, just apply the Featurable behavior to the content type

Configuration is managed using plone.registry. To configure, check out the "Configuration Registry" control panel and configure these keys:

• wcc.featurable.interfaces.IFeaturableSettings.feature_image_height
• wcc.featurable.interfaces.IFeaturableSettings.feature_image_width