@IBOutlet weak var menuScroll: UIMenuScrollView!

// ...

override func viewDidLoad() {
    super.viewDidLoad()
    // ...
    
    // MenuScroll configuration
    menuScroll.delegate = self
    menuScroll.spacing = 10.0
    
    // ...
}

extension ViewController: UIMenuScrollViewDelegate {

    /// Set count a elements in menu scroll
    func menuScroll(menuScroll: UIMenuScrollView) -> Int
    { ... }

    /// Set options to single button on menu scroll
    func menuScroll(menuScroll: UIMenuScrollView, createdButton: UIButton, index: Int) 
    { ... }

    /// Touch button event
    func menuScroll(menuScroll: UIMenuScrollView, touchSender: UIButton, index: Int) 
    { ... }

    /// Set options to center indicator image
    func menuScroll(menuScroll: UIMenuScrollView) -> UIImage?
    { ... }

}