This feature helps to group the child specifications of a composite product specification into one or more logical groups. By defining groups with relationship-type rules, a product manager can provide guidance to a sales team on what group to choose from out of all child product specifications during the sales or proposal process. Product Catalog for Communications provides the “One or none,” “One or more,” and “Only one” relationship types for grouping the child specifications of a composite product specification. You can also extend this feature to include more relationship types as per business need.