Issues:

1. It would help if you actually submitted some artificial data with your workbook. Not just a blank template.

2. Your template sheet is set to have dates in the "Drivers Abstract Expiry" section (which is the section I think you want summed). How do you sum dates?

3. Where do you want to "sum it up" at?

Keep in mind that I know nothing about your sheet so things that make sense to you, will not make sense to me.