The live preview shows how a feature affects the document when you hover over different choices. For example, when hovering over different types of charts, the selected data will demo different charts, if you have enabled the live preview. To enable Live Preview, please following the steps below:
Step 1: Click the "File" Tab from the ribbon;
Step 2: Click the "Options" from the left navigation menu;
Step 3: Click "General" from the left navigation menu in the dialog box;
Step 4: Check "Enable Live Preview" in the main window.
