Crystal Reports Grouping Dates into Columns

Message

   Hi,

I'm rather stuck with a Crystal Reports 8.5 (yes, it's the only version my client uses). 

What I have is an Outstanding Work Report with the dates that each work item was created, and what I need to do is create 3 columns within the report to summarise the number of work items that have been outstanding for A - less than 3 months, B - between 3 months and 12 months, C - and finally those outstanding over 12 months..

I'll be supressing the individual lines of each work item, in view of just requiring the summaries in A, B, and C.

I've exhausted google searches etc. 

DD