title: tvOS UIFocusGuide for multiple objects
body: <p>I'm trying to manipulate the tvOS focus engine but without succes. The setup is basic: 3 small buttons and 2 full-width collectionViews, see image.
  <a href="https://i.stack.imgur.com/MgJvK.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/MgJvK.jpg" alt="tvOS Focus engine example"></a>
  What I want is 1) when you are focussed on the red border and swipe up, to go to the theaters button. (this is working) 2) When you are focussed on the green border and swipe down, to go to the "> all movies this week" button. 3) Same as (2) but for the second collectionView.</p>
  
  <p>Working code for the swipe up to "Theaters" button:</p>
  
  <pre><code>focusGuide = UIFocusGuide()
  view.addLayoutGuide(focusGuide)
  
  focusGuide.leftAnchor.constraintEqualToAnchor(view.leftAnchor).active = true
  focusGuide.topAnchor.constraintEqualToAnchor(view.topAnchor).active = true
  focusGuide.widthAnchor.constraintEqualToAnchor(view.widthAnchor).active = true
  focusGuide.heightAnchor.constraintEqualToAnchor(theatersButton.heightAnchor).active = true
  </code></pre>
  
  <p>Do I need to add a second focus guide for the 2 other buttons? If so, on which view should I add these other focusGuides? I guess I'm missing something. Thanks!</p>