How can I use WKNotificationScene with WKExtensionDelegate and WKInterfaceController?
Watch OS used WKNotificationScene
The documentation you're looking for is at https://developer.apple.com/documentation/swiftui/wknotificationscene/init(controller:category:)?changes=l_5 and https://developer.apple.com/documentation/swiftui/wkextensiondelegateadaptor. If it doesn't answer the question you're asking, perhaps you could rephrase/elaborate?