Solvline PortView V2.1a - Manual (Page 24)

PortView Chapter 5. Group Window
5-4
 Group is created. Now select the device and drag-and-drop to the destination sub-group.
 Now the device is moved to the sub-group.
 Select ‘Rename’ to change the name.
 Assign a new name. Please note that this name only applies to PortView.
 Now group and sub-group creation, device assignment rename should be easy.