Use the Insert Subreport dialog box to insert a subreport into your report. Once the dialog box appears, you can either choose an already existing report to insert as a subreport or create a new report from scratch.
This dialog box appears when you right-click in the Report Designer, point to Insert and click Subreport.
The dialog box has two tabs:
Inserting Subreports | Unlinked vs. Linked Subreports | Design Choices to Optimize Performance | Crystal Report Creation Wizards