- first, create the base report and save it to a file;
- next, select "File|New..." menu item and choose "Inherited report" item. In the open file dialog, select the base report that you have created before;
- add bands, objects, datasources.
As you can see, the items that are defined in the base report are marked with "lock" sign. That means you cannot delete or rename such items or move them across bands. You may change the base report as you want: add new objects, change existing objects' appearance, delete objects. All changes made to the base report will be automatically reflected in the inherited one.