Each panel, whether docked or floating, is a container that allows other panels to share the same space. This enables you to use the available workspace efficiently.
To embed one panel within another:
to embed the panel below those already displayed;
to embed the panel above those already displayed;
to embed the panel to the left of those already displayed;
to embed the panel to the right of those already displayed;
to embed the panel as a tab.
When the cursor is over a drop target in the Docking Assistant, its corresponding space is shaded blue. This provides a preview of the new layout.