Administration : Reports : User Report Definitions : Making report settings : Show group fields in detail lines
Show group fields in detail lines
If you enable this option, the names of fields that were selected as group fields will be printed in each detail line. For example, in a report on properties, if the property name is a group field, this name is repeated in each detail line.
Warning To save a group report, always select CSV in the Save as option. The .xls format is not recommended for a group report because the output will not be properly formatted.