I'm using Version 1.4 . I was watching a tutorial video that was 4 years old, so I realize they were using a different version. I was anting to set up the right side so it looks like the attached file. thanks in advance.

There are "split bars" between the dialog panels.

Tyler Durden  , thank you for your reply. When I open several items they display as icons in the header reducing my work space. My question is how how can i stack them? It seemed like the first version i started with years ago, they stacked like that but in the version I downloaded on my new laptop (V1.4) it does not. 

Again thanks in advanced

The tabs can tear-off or be stacked by dragging.