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// Create the button
let button = INUIAddVoiceShortcutButton(style: .blackOutline)

// Generate the activity (using utilities framework)
let newActivity = UserActivity.getUserActivity(identifier: currentMode.identifier, title: currentMode.title, subtitle: currentMode.subtitle, bundleIdentifier: "com.benrobinson.anxietyrelief")
newActivity?.suggestedInvocationPhrase = currentMode.phrase

// Create Shortcut
let shortcut = INShortcut(userActivity: newActivity!)

// Assign to button
button.shortcut = shortcut

// Set delegate to self (must conform to INUIAddVoiceShortcutButtonDelegate, INUIAddVoiceShortcutViewControllerDelegate, INUIEditVoiceShortcutViewControllerDelegate)
button.delegate = self

// Set constraints / size
button.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint(item: button, attribute: NSLayoutConstraint.Attribute.height, relatedBy: NSLayoutConstraint.Relation.equal, toItem: nil, attribute: NSLayoutConstraint.Attribute.notAnAttribute, multiplier: 1, constant: 60).isActive = true

// Embed in view (in this case siriView)
siriView.addSubview(button)
siriView.centerXAnchor.constraint(equalTo: button.centerXAnchor).isActive = true
siriView.centerYAnchor.constraint(equalTo: button.centerYAnchor).isActive = true