21 About Designing Flex Asset Types
When creating flex asset types, you also create the individual data structure assets of those types. These assets are flex attributes, flex parent definitions, flex definitions, and flex parent assets. For creating flex asset types, the Flex Family Maker utility is available in the Admin interface.
Typically, you design the flex asset types and create the data structure assets on a development system. When your data model is ready, you migrate your work from the development system to the management and delivery systems.