Reports can be edited from the the report listing page by clicking on the inline edit option . Also report can be edited from the Report details page by clicking on the link.
Through the Columns tab, you will be able to reset the different columns that you want to include in your report.
Through the Order By tab, you can re-select the fields by which you want the report information to get organized. You can also change the order the report in Ascending or Descending format.
Through the Criteria tab you can reset Advanced Filters. This can be done by re-selecting new required fields from the list and then setting conditions and putting values to corresponding conditions.
Here you can edit Report Name, Description and Advanced Filters. You can also change the scheduling of the report if you want.