1. Turn off Auto-Focus on the lens and make sure your camera is in "P", "S", "A" or "M" mode
not the green box. If using "M" mode be sure to set the proper exposure.
2. Hold COLORRIGHT over the front of the lens.
3. Point the camera lens at your subject(s) of interest, or the light source(s) illuminating your subject(s) of interest.
4. Take 1 photo.
5. Push the "Menu" button.
6. Locate the "Custom WB" menu option and enter this menu.
7. Select the photo you just took (it should be a frame which is all a shade of white or gray).
8. A reminder notice will appear if your camera is not in "Custom WB" mode.
9. If your camera is not in "Custom WB" mode select the "WB" button on the camera body. Select the custom wb symbol (square between two triangles).
10. Start taking photos. Repeat steps as needed (whenever the light source changes, or you change locations).
You may also wish to download the camera PDF Manual
Here and go to page 62 for full instructions on custom white balance options for your camera.