Panels in Plasma Desktop
The panel can be configured by clicking on the toolbox on the right of the panel which puts the panel into configure mode. This lets you configure the panel to fit your needs.
Panel Alignment: Allows the alignment of the panel to be set in three pre-set positions.
Always Visible: Keeps the panel visible at all times, even when windows are maximised.
Auto Hide: Hides the panel off screen until the mouse is placed near the screen edge.
Windows can cover: This allows windows to cover the panel and if maximised, will cover the panel.
Windows go below: This allows windows to go below the panel, even when maximised.
Maximise Panel: Makes the panel fit to the screen edges, if it has been resized.
Remove this panel: Removes the current panel.
Lock Widgets: Locks the panel and widgets in position.
Add Spacer: Allows you to add a spacer into the panel giving space between the items in it.
Add Widgets: Allows widgets to be added to the panel.
Height: Allows the panel height to be adjusted.
Screen Edge: Allows you to drag the panel to any of the four edges of the screen.
The arrows on the edge, just below the main settings allow the panel's size to be adjusted. Dragging the arrow makes the panel smaller or larger. Dragging the arrow pointing down, moves the panel's position.