1.If the diagram is in a document or a worksheet, double-click on the diagram to open it.
2.Select the curve label that you would like to align.
3.Select a suitable alignment on Format[Align] to place the label above or below the curve.
4.Drag the text to the desired position on the curve.
Note You can move the curve label only along the curve. For 3D diagrams, it is best to choose the front view or plan view.