To Unpin a Docked Dialog
Dock a dockable dialog to an edge of the application window.
Click the Unpin (pushpin) icon in the upper-right corner of the docked dialog.
The docked dialog disappears from view, and a roll-out tab appears in its place along the same edge of the application window.
The Unpin icon
Roll-out tabs for dialogs docked to left side of application window