When a saved report is created (for information on how to save a report see the step by step guide on creating reports), it can be found in the saved report list, accessible through the menu item Saved reports.
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On the Saved report tab, many of the settings for the report can be changed. You can change the report name, receivers, and period it should contain.
Under Schedules you will find a number of icons where the first one allows you to Edit the schedule. From here you can modify the schedule, grouping and file format.
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Use an existing report as a template for a new saved report
If you want to use an existing report as a template for new reports, it is possible to open an existing report, and make the changes you want. For example, you can change the receivers and select a different set of measurement objects. By changing the name and using the Save as a new saved report button, a new saved report will be created with the modifications you have made.