Product Managers manage model version variability by defining the variants and variant values, and option groups and options.
Working with Variants and Variant Values Working with Option Groups and Options Variants and Options Page Variants Page for a Model Copying a Variant or Option Group from Another Object Copying a Variant or Option Group to Another Object Committing Variants and Option Groups to a Model Version Allocating Evolution Effectivity for Variant Values and Options Running the Structure Compare Report