1.  In Document Manager click View>Toolbars
  2. The  toolbars checked are displayed. If the toolbar you want to see is not shown, click it to turn it on.
    view menu
  3. To view thumbnails, click View and then click Thumbnails. You can click it again to hide them.
    view thumbnails
  4. Thumbnails can be moved.
    1. Here the Thumbnails are to the left of the document. This is the default position.
      default thumbnail view
    2. Here the Thumbnails appear above the document. In this case, the user has moved them by dragging the thumbnail window to a new position.
      custom thumbnail view

You are evaluating Refined.