My grill has 3 burners. When I am preheating, I light at least 2 of them. During the direct heat portion of cooking, I use the area over those 2 burners. I turn off the middle burner to cook with indirect heat. The one burner does a great job of maintaining an even temperature within the closed grill for this step. Every grill is different, please spend a little time figuring out what works best for yours.