Grey out a group of cells dependent on month and year

[CDandVinyl]

Hi All

I'm trying to get the conditional formatting right in my schedule worksheet.

There are three rows for each calculation. The first row holds the start date , the second shows amount of weeks between and the third holds the end date.

Essentially , I'd like all three to grey out once the current month and year in the third one has passed.

For example: B , C and D would grey out once the month and year have in D passed.

I'd like this to apply right across all the worksheets in the workbook for each group of three rows.

Can someone help with a formula?

I'll attach the workbook.

Grateful for your help.