Navigate to Administrator -> Reports
Select the appropriate report you'd like to export. .
Navigate through the list to Activities, Individual Result and click on Add.
In the new window click on Add under the Activities label.
Tick one of the options listed under Activities (it doesn't matter which one you choose), then click on OK.
Next, click on Add under the Groups label.
Mark All Users and klick OK.
In the Choose columns you can decide which columns you'd like to have displayed in the report.
Scroll down to view all available options for you to include in your customized report. Click on to update once you have made your selection. See example below of a created user report.
You'll find a range of different formats to chose from, just above the list view, when exporting the report.