Grouping elements in UML diagrams

In UML diagrams, you can put elements into a group so you can move those units as a unit or apply changes to all of them at once.

Procedure

Select the elements that you want to include in the group. To select elements, hold Ctrl or Shift while you click the elements, use the mouse to draw a rectangle around the elements, or see Selecting elements in UML diagrams for other methods of selecting many elements at once.
Right-click one of the elements and then click Format > Group.
To ungroup the elements, right-click one of the elements in the group and then click Format > Ungroup.

Now you can move the elements around the diagram as a group. You can also apply formatting options to all of the elements in the group at once.