About panel groups
Panels in Dreamweaver are grouped together into panel groups. The selected panel within a panel group appears as a tab. Each panel group can be expanded or collapsed, and can be docked or undocked with other panel groups.
Panel groups can also be docked to the integrated application window (Windows only). This makes it easy to access the panels you need without cluttering your workspace.
Note: When a panel group is floating (undocked), a narrow blank
bar appears at the top of the panel group. In this documentation,
the term “panel group’s title bar” refers to the area where the
panel group’s name appears, rather than to this narrow blank bar.