I'm not even sure if this is possible, but I've thought about it a while,
cruised through a lot of the posts, and thought I'd go to the experts and see
if they can help.

Part No Leadtime Monday Tuesday Wednesday Thursday Friday
11154001 5 2000 2530 2020 1860 2640
11154002 4 3200 2530 2020 1860 2640
11154003 3 5000 2530 2020 1860 2640
11154004 2 1700 2530 2020 1860 2640
11154005 1 2250 2530 2020 1860 2640

The columns go out for 4 weeks - Monday thru Friday. Based on the lead time,
I need to find the highest demand within the 4-week time frame. So, if the
lead time is 5, I need to add Monday thru Friday, Tuesday thru Monday,
Wednesday thru Tuesday, etc., and find the highest total demand for that
item. If I change the lead time from a 5, to a 4, it would need to
recalculate and give the highest demand over a 4-day period.

Can anyone help?