> Portal Navigation: > > - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version. > - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages). > - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`). > - Top-level index of all portals: https://dev.wix.com/docs/llms.txt > - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt # Resource: Item Modifier Groups # Type: Item Modifier Group Object # Link: https://dev.wix.com/docs/api-reference/business-solutions/restaurants/menus/items/item-modifier-groups/item-modifier-group-object.md ## Schema: ```json Type: Item Modifier Group Object | type: ModifierGroup - name: id | type: string | description: Modifier group ID. - name: value | type: string | description: - name: revision | type: string | description: Revision number, which increments by 1 each time the modifier group is updated. To prevent conflicting changes, the current revision must be passed when updating the modifier group. Ignored when creating a modifier group. - name: value | type: string | description: - name: createdDate | type: string | description: Date and time the modifier group was created. - name: seconds | type: string | description: - name: nanos | type: number | description: - name: updatedDate | type: string | description: Date and time the modifier group was updated. - name: name | type: string | description: Modifier group name. - name: modifiers | type: Array | description: Group of item modifiers. - name: id | type: string | description: Item modifier ID. - name: preSelected | type: boolean | description: Whether the item modifier is pre-selected. Default: `false`. - name: value | type: boolean | description: - name: additionalChargeInfo | type: AdditionalChargeInfo | description: Item modifier price details. - name: additionalCharge | type: string | description: Additional charge for the item modifier. A value of `0` means the item modifier is free. - name: rule | type: Rule | description: Modifier group details. - name: required | type: boolean | description: Whether the items from the modifier group must be selected. - name: minSelections | type: number | description: Minimum number of item modifiers a site visitor must select. The value must be lower or equal to the available item modifiers in the group. Default: `0`. - name: value | type: number | description: - name: maxSelections | type: number | description: Maximum number of item modifiers a site visitor may select. Must be greater than or equal to the value of `minSelections`. - name: extendedFields | type: ExtendedFields | description: Extended fields. - name: namespaces | type: object | description: Extended field data. Each key corresponds to the namespace of the app that created the extended fields. The value of each key is structured according to the schema defined when the extended fields were configured. You can only access fields for which you have the appropriate permissions. Learn more about [extended fields](https://dev.wix.com/docs/rest/articles/getting-started/extended-fields.md). - name: businessLocationIds | type: Array | description: IDs of the business locations ([SDK](https://dev.wix.com/docs/sdk/backend-modules/restaurants/wix-restaurants-new/about-business-locations.md) | [REST](https://dev.wix.com/docs/rest/business-solutions/restaurants/wix-restaurants-new/about-business-locations.md)) where these item modifier groups are available. ```