Hi Thomas,
We are using WAD Templates for viewing charts and tables together. We think it is useful because users can see a list of reports from a single web page and can view the templates.
It is very difficult to generate a workbook or WAD template with graphics if you don't have any data in development system. Please take a look at the document below. It may help in your case.
http://scn.sap.com/docs/DOC-45186
Regards
Yasemin...
