When you click the Change to View or Edit Mode button, you can switch between view and edit modes.
Panorama Mode Icons
When you switch modes, the image in the button will change to the icon for the new mode. The following figure shows the Mode icons.
In edit mode, you can move device nodes around in the topology view, allowing you to organize them in any way you choose. In addition, you can add or remove device dependencies.
If you select a device node in edit mode, a plus sign appears on the icon; click this plus sign and drag to another device to create a new parent/child dependency relationship.
To remove the device dependency, select the parent device, and then click the X that appears on the line connecting the two devices.