API Reference > presentation-common > PresentationRules > ContentModifiersList > propertyCategories propertyCategories propertyCategories: undefined | PropertyCategorySpecification[] Specifications for custom categories. Simply defining the categories does nothing - they have to be referenced from PropertySpecification defined in ContentModifiersList.propertyOverrides by id. Defined in presentation/common/src/presentation-common/rules/content/modifiers/ContentModifier.ts Line 49 Last Updated: 29 November, 2022