To execute reports, from either executed or scheduled reports, press on the "Generate report" button.
Afterwards, select the report you want to execute:
The parameters for this report will be displayed, allowing the user to customize it:
Finally, the user can execute the report or (if allowed) schedule the execution.
On the schedule screen, the user can select the time period to execute it (cron style) and the target users of the executed report. The time period pattern allows the user to schedule a report to be executed monthly, weekly, daily of even hourly. Multiple target users and groups can be specified. Mind that specifiying a group name the group evaluation will be performed on report execution time, and only the members of the group and report execution time will be allowed to see the resulting report.