Step 1: Navigate to your Report Manager
From the Main Menu or Home page, click 'Report Manager'. You can use the search function on the sidebar or click the link under the 'Reporting & Data Analysis' section.
Step 2: Edit your report
You can further customize your report by adding additional columns of information. Columns available to you will depend on the type of report you are creating. Click the 'Edit Columns' button. 
Then, check or uncheck the boxes next to each field. Similarly to Filters, the column fields are grouped into sections that can be collapsed and expanded.
Once you are finished, click the 'Apply' button to save your changes!
What else do you need help with?
How do I create and run reports in Report Manager?
How do I filter my reports in Report Manager?