As the Telerik Reporting WhitePaper
explains, reports differ from documents and you cannot add freely content to wherever you want. A report displays data by applying “rules” (or “templates”) to the data and
then rendering that data in a layout that’s ultimately designed to be printed. Also like repeaters, individual data items rendered in a report cannot be altered. The templates are defined and then applied to all data items the same way. The reporting engine takes care of the processing and paging of the data and you cannot interfere here either.
Your best bet would be to create a single page report with the data you want and use the Report Book
feature to "join" your main report with this one.
the Telerik team