Because this roller grill only has 5 rollers there is no need for 2 controls. Generally, larger grills with more rollers have 2 controls; one heat control for the rear rollers and one heat control for the front rollers. I have attached several roller grills below that have 2 controls if that is what you are looking for. https://www.etundra.com/restaurant-equipment/concession-equipment/hot-dog-cookers/roller-grills/adcraft-rg-07-18-hot-dog-roller-grill/ https://www.etundra.com/restaurant-equipment/concession-equipment/hot-dog-cookers/roller-grills/adcraft-rg-09-24-hot-dog-roller-grill/
Cook time varies depending things such as hot dog thickness and the heat setting. On average, roller grills take approximately 10-30 minutes to cook hot dogs.