1.If the diagram is in a document or a worksheet, double-click on the diagram to open it.
2.Double-click on the curve or the axis label of the curve to which you want to add a curve label.
3.In the dialog box that appears, click on the Curve Labeling tab.
4.Check the option Label curve.
5.Enter the text with which you want to label the curve. You can insert fields into the text to include attributes of the data set upon which the curve is based.
6.Specify under Location the relative location of the label to the course of the curve.
Note: You can adjust the location of the cursor label later using your mouse.