Are there any reports in Practice management that will report the Fees figures by Family Group?
Family Group is a standard Attribute, the attribute ID is 10453. As long as the Attribute ID is the same. You can use below reports in Standard Reporting.
In Practice Management and Standard Reporting two reports are available.
The first is located under WIP > WIP Aged > by Family Group.
The second is located under Debtors > Transaction Listings > Transaction Listing by Family Group.