Display status bar's text in white

Inside the affected view controller, add the following definition:

override var preferredStatusBarStyle: UIStatusBarStyle {
    return .lightContent
}

Define margins for a background image

When an element has a background image in a Storyboard, it might be necessary to adjust its margins on the Swift side:

element.imageEdgeInsets = UIEdgeInsetsMake(top, left, bottom, right)

Display a UIViewController

First, in the Storyboard, there should be a scene that is mapped to the controller class we want to display. If the current controller and the one that should be displayed are in different storyboards:

let vc = UIStoryboard.init(name: "OtherStoryboard", bundle: Bundle.main)
                     .instantiateViewController(withIdentifier: "OtherControllerId")
         as! OtherControllerClass

self.present(vc, animated: true, completion: nil)

If both controllers are in the same Storyboard :

let vc = self.storyboard?
             .instantiateViewController(withIdentifier: "OtherControllerId")
         as! OtherControllerClass

self.present(vc, animated: true, completion: nil)