<!--
{
  "documentType" : "article",
  "framework" : "AddressBook",
  "identifier" : "/documentation/AddressBook/people-picker-selection-behavior",
  "metadataVersion" : "0.1.0",
  "role" : "collectionGroup",
  "title" : "People-Picker Selection Behavior"
}
-->

# People-Picker Selection Behavior

Constants to specify the selection behavior for the values of multi-value properties.

## Topics

### Constants

[`kABPickerSingleValueSelection`](/documentation/AddressBook/kABPickerSingleValueSelection)

Allows the user to select a single value. This is the default behavior.

[`kABPickerMultipleValueSelection`](/documentation/AddressBook/kABPickerMultipleValueSelection)

Allows the user to select multiple values.

[`kABPickerAllowGroupSelection`](/documentation/AddressBook/kABPickerAllowGroupSelection)

Allows the user to select entire groups in the groups list. Otherwise at least one record in the group is selected when the user selects a group. The default is not to allow group selection.

[`kABPickerAllowMultipleSelection`](/documentation/AddressBook/kABPickerAllowMultipleSelection)

Allows the user to select more than one group or record at a time. The default is to allow multiple selection.


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)