[Robert Thacker-]

You don't need to. You can use an already made lighting style and change the scale and position that the lights hit the field. Click the Lighting Styles and then click on some already set lighting style (we use Blue Hue Lighiting). then click the position tab and click on the arrow. Select a face for the light to focus on. I clicked the top of your center goal. Then where you see scale, turn it all the way up to 1000%. Sometimes the lighting may come in upside down from what you want. To fix that, just click the flip light position next to the orientation plane.

This should save you a lot of time.