You can do it programatically this way:
Swift 3+
let storyboard = UIStoryboard(name: "StoryboardName", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "ViewControllerID") as UIViewController
present(vc, animated: true, completion: nil)
2
solved How do I programmatically pull up a different storyboard when a button is clicked in Swift 4? [duplicate]