# sceneAssociationBehavior Criteria the system uses to direct an activity to a specific scene of your app. ``` var sceneAssociationBehavior: SceneAssociationBehavior ``` ## Discussion An app with multiple types typically uses each scene for a different purpose. For example, you might use one scene type for your app’s documents, and a different scene type for tool palettes, information windows, and other content. When a group activity starts, the system uses the information in this property to deliver the activity to the appropriate scene. On some platforms, the system also adds a custom indicator to the scene to let people know that SharePlay is active. Assign a value to this property to specify the scene-selection behavior for your app. If you don’t specify a value for this property, the system adopts the [`default`](/documentation/GroupActivities/SceneAssociationBehavior/default) scene association behavior. --- Copyright © 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)