If you use the DataPilot very often, you might find the frequent use of the menu paths (Data > DataPilot > Start and Data > Group and Outline > Group) inconvenient.
For grouping, a shortcut is already defined: F12. For starting the DataPilot, you can define your own keyboard shortcut. If you prefer to have toolbar icons instead of keyboard shortcuts, you can create a user-defined symbol and add it to either your own custom made toolbar or the Standard toolbar.
For an explanation how to create keyboard shortcuts or add icons to toolbars, see Chapter 14 (Setting Up and Customizing Calc).