The Select tool lets you select multiple objects to manipulate and control them as a single object. The Select tool has two modes of selection, Window or Crossing.
While the Window mode selects only objects within in a marquee selection, the Crossing mode selects all objects in a marquee selection and any objects that intersect the selection.
Do either of the following for selection mode:
Marquee select the objects. During the selection, the objects are highlighted with a white outline and the last selected object is highlighted with a green outline. This object is used when you transform the selected objects, for example when you move or rotate the selection.
To add more objects to the selected objects, Shift-click or Shift-marquee select and to remove objects, Ctrl+ Shift-click or Ctrl + Shift-marquee select. For more information, see Hotkeys.