HP Intelligent Management Center Standard Software Platform - Manual (Page 256)

For example, if you create this formula:
{customer.CUSTOMER NAME}[1]
and then group on the formula, the program will group your data based on
the first letter in the Customer Name field.
To create a live group header for a group based on a formula, simply insert
the group name field in the Group Header section.
When you run the report, the "A" group will have the letter "A" as a header,
the "B" group will have the letter "B", and so on. For more information, see
Grouping by the first letter of a company name and Grouping data in intervals .
Headers for custom groups
The final type of header is a header for the types of custom groups created
when data is grouped in a specified order. When using specified order
grouping, both the name for each group and the records that belong in it are
specified. As in the other grouping situations, the program creates a group
name field for each group based on the group names specified.
To create a header for custom groups
1.
On the View menu, click Field Explorer.
2. In the Field Explorer dialog box, expand the Group Name Fields folder.
3. Select the Group Name field for the custom group and drag it into the
Group Header section for that group.
The program automatically applies each of the group names you assigned
to the appropriate groups.
Note:
Make certain that when you assign the names to the groups using the Define
Named Group dialog box, the names you assign are the names you want to
appear as group headers.
256 Crystal Reports 2008 SP3 User's Guide
Sorting, Grouping, and Totaling 10
Group headers