Grouping allows you to treat several objects as a single entity. A group enables you to fix the position of the member objects in relation to each other and to change the properties of all member objects at one time. To create an object group, select two or more objects and then select Objects->Group.
When the group is created or subsequently selected, a set of black handles displays around the outside of the group, as shown in the figure above. At this point, you can move the entire group just like you would move a single object. Just click and drag on any of the objects in the group.
You can also change the properties of all objects in a group by double-clicking or using the right-click context menu. See Changing Properties for a Group of Objects for more information.