Grill meats uncovered over medium heat, brushing frequently with oil mixture and turning occasionally, for the following times: Grill beef 5 minutes. Add chicken and continue grilling. Grill beef 12 to 16 minutes or to desired doneness. Grill chicken 15 to 20 minutes or until juice is clear when centre of thickest part is cut (170º). Add cooked sausages during the last 5 to 10 minutes of grilling to brown.