Stimulsoft report group headers and footers
Group headers group and sort the data by a specified field. You can create multiple group headers for a report. A group header should have a corresponding footer and both should be named to keep the report manageable.
For a bill of material report you can create a group header for Shape, Dimensions, Grade, Width, and Length each. For each group, specify the field to be used in the Condition property of the group, for example, Projects.JobNumber.
In the report, you then have a table that displays the material by these groupings.
You can also use group headers to specify page breaks. You can, for example, start a new page for each material shape or project.
Group headers and footers are the place to put summarized data. For example, a Dimensions footer can be set to show the material quantity and weight totals for each material size.
Add a Group header and footer
Once you have added the group header, you can also modify the other properties.

Specify a data field for Condition
A group header needs to have a data field specified for its Condition property.