During the step-by-step procedure of creating your chart A pictorial representation of information from a table eg a graph. you will find the Labels and Titles page of the Create New Chart dialog box A window used to supply information to Publisher..
If you are editing an existing chart, double-click on the chart to display the Edit Chart Properties dialog box and select the Labels and Titles tab.
In the Main text box, type the main title for your chart.
In the X Axis text box, type the title you want to give to the X axis of your chart.
In the Y Axis box, type the title you want to give to the Y axis of your chart.
Click on the Properties button to edit the text style of the relevant title. The Text Properties dialog box appears.
Make your selections and click on OK to return to the Labels and Titles page.
Note:
You can see the effect of the changes you make in the display box.