To indent rows in a report, use the “Style row” (paintbrush icon) in the report editor.

Go to the report you wish to format.  Click on Edit.   

From the dropdown menu, select Edit Report.

Click on the row you wish to indent.

Various options will appear in the row including the paintbrush icon to indicate “style row”.

Click on the Style row (paintbrush) icon.

Click on the Indent option to see the dropdown menu.

Choose the level of indent (none, 1, 2, or 3 levels).

Repeat for each row you wish to indent.

Save the report

That's it!