# Conceptual Product Structure

## How to Assign Constraints to Product Variants

| ### What to do:
| Select Start > Products > Product Variants. The Product Variant mask is opened.
| Search for BP Junior.
| Select the Specification Constraints tab.
| To change to insert mode click .
| Click in the Restriction field. The Specification Constraints list is opened.
| Select +rubber; from the Specification Constraints list.
| To save the entry click .
| One or more variants can also be assigned to a specification constraints in the Specification Constraint mask.