Instruções ( tiradas de aqui )
Launch Microsoft PowerPoint and open the presentation you wish to edit.
Click the "Home" tab located at the top left corner, and click "Select" under the "Editing" menu located in the top right corner. (Note: on Mac look for "Arrange", then choose "Selection Pane...".)
Click the "Selection Pane," the third option from the drop-down menu. A pane will appear on the right side of the screen, displaying all the objects in the slide.
Click on the object names to rename the objects. You may double-click and type in the name and press the "Enter" key to rename the objects.