How to open multiple files in the beta version

In the traditional version of Premiere Pro, when you opened a file in a project, it was added as a new item. Because of that, music appeared in a list view and videos appeared in an icon view.
However, in the beta version, when you open a file, the project name changes to that file name and everything is shown in a single window.
Is there any way to have multiple windows like before?

[Moved by moderator to the Beta forum]