title: Display a view using an existing rendered HTML with Backbone Marionette
body: <p>I am having an application layout like the one attached. The upper panel is already to the page (i.e. in the server's HTML response). While the user interacts with the elements in that panel the content of the dynamic panel below changes accordingly.</p>
  
  <p>I've studied Backbone Marionette various View types and Region Manager. But I still can't figure out a way to implement this. I need to capture events from the already rendered elements and change the dynamic content accordingly. As I understand, every time a region is created to <code>show</code> a specific Marionette view, the region's content is replaced by that view's <code>el</code>. And with that I cannot have a <code>Layout</code> view for the container of the whole thing. </p>
  
  <p>So can this be done in anyway using Marionette?</p>
  
  <p><img src="https://i.stack.imgur.com/S4ZTu.png" alt="Sample Layout"></p>