To give meaningful names to the various Groups, right mouse click on the Group you wish to name and select Rename Group. Enter the new name of the Group and press Ok.
To add Gadgets to a Group, first select the Group you wish to add to. Then put a check in front of the Gadgets you wish to add using the Gadget Tree.
Finally, right mouse click on the GroupBin and select Add Group to GroupBin.
The selected Gadgets will be added to the Group and can now quickly be re-selected by simply clicking on the name of the Group they belong to.
To remove a Gadget from a Group, select the Gadget you want to remove and press the - button.