http://3dmapping.cloud/about-3dmc/about-screen-layout/

Screen Layouts in the Workspace sidebar

Open the Workspace sidebar using the flyout :

Using the Screen Layouts

Pick one of the presets to set your Screen Layout.  There's a choice between a single 3D view, or a combination of the 3D view with a base map either at the top, at the left side or floating, and more. When selecting Top Base Map, Left Base Map, Floating Base Map or Oblique, all other part(s) shows the standard multifunctional view.  But it also adds new capabilities starting with the menu options to be found central-top in the viewer : This allows to open multiple views of the same data all at once.