How to modify the default WORKLOAD report, in the Jira Helpdesk ?

[Michael Byrne]

Using the JIRA helpdesk and it has a default report in there called WORKLOAD which shows the number of issues assigned to users.

How can I copy and modify that report to show me the count of resolved issues by users for different time periods (day/week/month) ?

Tried to create a new report but it's only generating line graphs for me.. (my lack of knowledge?)

Or is there another existing report I can download, that covers this ?

Michael.