After you have created an object such as a table, chart, or diagram on a slide, you can change its look and contents at any time. For example, you can change a SmartArt Graphic to a different layout, or edit the text or data in a table or chart.
Edit a Slide Object
1 In Normal view, click the slide with the object to change in the Slides tab.
2 Click the object to edit on the slide.
PowerPoint selects the object, and displays contextual tabs for editing the object on the Ribbon.
3 Edit text or data.
For a table, click ...