Hi Shafraz. The solution to this is more simple than I expected it to be. For your dashboard, you'll have noticed that the OOB Dashboard is unable to be edited. However, we do get this friendly pop-up suggestion.
To copy the dashboard, we can do this:
In the new copy of the previous dashboard, we'll have rights to edit it. At the top of the page, we have a series of drop down menus that represents filters to run.
From there, we click a drop down, and choose the groups we'd like to run the reports within the dashboard on. In the drop down list, simply "check" the groups you want, then click the directional arrow in the center. When you click 'Apply', the dashboard will refresh with updated results.
I hope this solves your issue-- setting this up should take five minutes, max. If I've misunderstood your requirements, let me know and I can attack it from a different angle.
Originally, I thought the quickest solution might have to run a script to query widgets based on which dashboards they were in, then copy those widgets en masse to a new dashboard to prevent having to copy them one by one. Thankfully, the solution detailed in the images above is *much* quicker, as well as easier.
