Turn on Global Reporting to include data from all your Marketo workspaces in your Email PerformanceEmail Link performance, and Campaign Activity reports.

Go to Analytics (or Marketing Activities) area.

Select your report.

Click the Setup tab and double-click Global Reporting.
Select Enabled.
That's all! Click the Report tab to see data from all your workspaces.

 

Learn all about reports in Basic Reporting  .