Using Code Collaborator 5.0.5030, if you go to the Reports tab (top right corner of the page), you can start with any existing report and customize it.
For example, in your case, I'd click the "Recently Completed Reviews" report to run it. Then scroll down to the "Filters" section and you can change the date range and other requirements for the report. Once you've got that, click "Save" and the updated version of the report will run.
I don't know how you would go about saving that report permanently so you can re-run it with the parameter set you provided, though. I usually don't have a ton of changes, so I just make them every time.