Grouping Nominal Activity / General Ledger Details by using "Import Reconciliation Data" functionality

Guidance:

This functionality is fantastic at summarising large volumes of data into smaller, more meaningful chunks.  For example, a long list of purchases costs could be grouped into the overall spend by supplier for the year, rather than just showing each purchase invoice line as it would be pulled through from the source bookkeeping data.

Step-by-Step:

The help guide from Silverfin on how to do this is here