To calibrate a SMART Board, you typically follow these steps:

1. Access the calibration tool through the SMART Board's on-screen settings or the computer's control panel.
2. When the calibration screen appears, use the pen or your finger to press precisely on the red crosshair targets that show up one by one on the board.
3. Press each target until it turns green, then move to the next target.
4. Once all targets are pressed accurately, a confirmation message appears indicating successful calibration.
5. Optionally, if calibration points need adjusting, you can re-calibrate individual points using specific keyboard or pen tray buttons.
6. After calibration, orient the board if needed to ensure alignment between touches and cursor.

Calibration ensures the touch points precisely correspond to the projected image and touch input, improving interactivity accuracy.

If you want, a brief overview for Windows and Mac is:

• Windows: Go to Control Panel > Tablet PC Settings > Calibrate.
• Mac: Go to System Preferences > Displays > Calibration.

During calibration, be patient and precise with pressing the targets to achieve the best alignment.