Any Panel you have on your desktop can be moved by using the middle mouse button, or by simultaneously pressing the left and right mouse buttons, to drag the panel to the desired edge of your screen. If you do not have a middle mouse button or did not configure your mouse to emulate a middle button you may also move a Panel by changing its location in the Panel Configuration dialog. You can read more in Chapter 8 of this documentation.
You may also add a new Panel to your desktop by selecting the Add New Panel from the Main Menu | Panel menu. You will be given a choice of Edge or Corner Panels. Both of these Panel types are described below.
Edge Panel - An Edge Panel is exactly like the main Panel that starts up with GNOME. By selecting this type of panel you may add a new Panel to another edge of your screen to give yourself more functionality.
Corner Panel - The Corner Panel is a small Panel that will not stretch to the extent of the edge of the screen it is on. The Corner Panel will, however, stretch to the extent of icons and applets it contains. The hide buttons work just a bit differently with Corner Panels. The hide button closest to the edge of your screen will hide the Panel as usual but the other hide button will send the whole panel to the opposite edge. When the latter move is made it will not hide the Panel since it is changing the side of the screen it resides on. If you want to hide it you will have to press the hide button once again.
At any time you can change the current panel to the opposite type by selecting either the Convert to edge panel or the Convert to corner panel from the pop-up menu. The selection that is available depends on which type of panel you right mouse click on. The selection displayed will be the opposite of the current panel.