Selecting multiple files is useful if you want to delete several files at once, or move a group of files to a new folder. Note that when you select more than one object, the Actions portion of the Selected menu will be empty.
When multiple icons are selected, dragging any one of the selected icons drags the whole group. The Selected menu and various menu commands that apply only to a single object are inactive.
Press mouse button 1 in a blank area of the view, drag the mouse to draw a box around the icons you want to select, then release the mouse button.
Or, you can click mouse button 1 to select the first icon, then hold down the Control key and click mouse button 1 to select each additional icon. This method is useful when the icons you want to select are not located next to each other.
To remove a single icon from a selected group, hold the Control key down and click the icon you want to remove.