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To enable the summary grid click Options | Customize Results Grids | Grid Display Options = Summary Grid with Details. Then click View/Customize to specify what you want to group on.
Reports
If you really need all the data in a single view, then Projector Web isn't the best place to be. Instead you'll want to navigate over to Management Portal and look to the Reports Reporting area. Select the most appropriate report, run it, and view the results in your data viewer of choice.
Narrow Search
Although obvious, maybe all you need to do is narrow your search to get under the two thousand item limit.