Pinpoint an area:

• Click the Drawing toolbar's AutoShapes button | Basic Shapes.
• Click the circle and drag a small circle onto the part of the photo you want to point to. For perfect circles, hold down the SHIFT key as you drag the shape of your circle onto the slide..

To add a pointer line:

• click the Drawing toolbar's line button and hold down the SHIFT key as you drag to create a perfectly straight line.

• Insert menu | Text Box.
• Drag the mouse to create a box next to your line, click inside it, and start typing.

Duplicate the combination as many times as needed around your slide:

• First, group the circle, line, and text box together so you can duplicate them as a single object and move them as a unit.
• Hold down the SHIFT key as you click each item.
• Click the Draw button on the Drawing toolbar, and choose Group.
• Copy the pointer line combo by pressing CTRL-D once for every copy you need
• You can then drag the copies anywhere on the slide.
• To lengthen a line, click the object, choose Draw and Ungroup, and drag the line.
• (If you drag the line without ungrouping the items, you'll deform the circle as you pull the line along.)