Run the Report that you wish to copy.
Click the Save as link at the top of the Report view page. 
You have now created a copy of the original Report which you are able to rename: 
Click on Finish.
Users, Line Managers and Content Creators can save a copy of a report with any filters applied, but they cannot edit the copy.
Administrators and Reporting Administrators are able to edit their copied report. See the Edit a Report guide if you need further information.
Once you have edited the Report, click on Run Report near the bottom of the screen.
Additional options
Share the Report
Tick the Share box under Who can run this report (see above image) to allow other Administrators to run the report.
Edit the Report
This allows you to amend the parameters, fields and filters. See the Edit a Report guide.