($ ) Counter Drive -Through CSA Board Grill Fries 0-162 163-223 224-338 339-395 396-492 493-542 WWWWNNNNNPP WWNNNNNHHHH UIAAWWNNNAP 543-621 622-723 PPPPPP 724-905 906-1, 109 >1, 110 The hourly forecast sales for a particular day, from 5:00 a.m. until 11:00 p.m., were: Time 5-6 6-7 7-8 8-9 9-10 10-11 11-noon noon-1 1-2 2-3 3-4 4-5 5-6 6-7 7-8 8-9 9-10 10-11 Forecast Sales $20 $90 $180 $320 $410 $410 $920 $1, 260 $630 $426 $360 $590 $1, 040 $1, 040 $810 $390 $340 $240 Use the shift scheduling heuristic to determine shifts for the following staffs. (Leave no cells blank - be certain to enter "O" wherever required.) a. Counter staff. Forecast Staff NM NM NM NM Sales Required 5 am $ 20 1 6 90 1 7 180 8 320 9 410 10 410 11 Noon 920 1 pm 1,260 2 630 N W W N - N N W W NN-3 3 420 4 360 5 590 6 1,040 7 1,040 8 810