select multiple objects
An object is any item you place on a slide, including images (photos), text boxes, shapes, tables, and charts. To select multiple objects, do one of the following:
Press and hold the Shift key while you click the objects.
Press and hold the Command key while you click the objects.
Click and hold an empty area of the slide, then drag the box that appears around the objects you want to select.
Note: If you’re working with inline objects, you can only select and edit one object at a time.