To undock a VectorWorks palette, click-drag it by its title bar to the desired location. To keep the palette undocked, press and hold the Control key while dragging the palette around. The palette remains undocked in the new location until you move or dock it again. Alternatively, select File > VectorWorks Preferences and click the Session tab. Deselect Enable Palette Docking.

NOTE: this is only available on Windows operating systems.

Undocked Palette:

Docked Palette: