You can insert graphic shapes such as lines, rectangles, block arrows, stars, and other basic shapes into your Excel 2007 charts and worksheets. All you need to do is select a thumbnail on the Shapes drop-down gallery on the Insert tab of the Ribbon and then drag the shape out in the worksheet.
On the Insert tab, click the Shapes button in the Illustrations group.
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The Shapes gallery appears, revealing nine categories of shapes, including Recently Used Shapes at the top.
Click a shape thumbnail to select it.
The Shapes gallery disappears and the mouse pointer changes to a crosshair.
Click and drag the mouse in the worksheet to create the shape in the desired size.
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Drag the object until it’s approximately the size you want (you can fine-tune the size later).
Release the mouse button.
The shape appears in the worksheet.