Is it possible to update all reports in a pack based on one prompt

Summary:

I'd like to be able to re-use the existing reports in a reporting pack for other reporting packs, but for different business areas. This will require a single prompt or something to select the business area when refreshing all the reports in the pack.

Content (required):

I have created a reporting package with various reports for one business area. I need to copy the report package for different business areas so essentially the cost centres will change in the reports. I don't want to have to create different versions of the reports for each report pack and would like to use the same reports with a prompt to change the business area. I've tried setting the first report to prompt for Entity and the other reports to use current POV, but that doesn't work. The current POV reports maintain their existing Entity.