Help with Cross Table

Hi

I am trying to produce a summary table to show the totals against a Business Unit and Area based on the number of people who have been off sick - categorised by the length of time they have been off sick in months.

I have attached screen shots to show what the data looks like and how I want it to appear.

Can anyone help, I think I need guidance on calculation contexts!

Will

sap-webi-cross-table.png