Having had yet another think about this.... ( you can stop rolling about on the ground in fits of laughter....) I might change the concept to to simplify the calculations given that the task could change either during the day or during the week and I don't want to have to rewrite the formulas over & over again.



Time Reason
6:30am Prestart machine
6.35am Ready
10:38am Crib
11:05am Ready
2.30pm Crib
5.45pm Service machine
6:12pm End of Day