This report uses General Ledger Account Numbers (GLA#) to group services. This grouping can be used to view income across multiple services that have been coded with the same GLA#. GLA#'s typically match what is used in the club's accounting software (such as Quickbooks).
In the screenshot below, 'Test Camp II - Summer Learn to Row' and 'Test Camp III - Summer Learn to Row' have been coded with the same GLA# and GLA Sub#. This indicates that the items belong under the same income group in the club's accounting software.