The CSV Export tab of the Options dialog contains the following options to configure how data is exported in the CSV export format:

The same fields as HttpWatch request grid:

Select this option to use the columns from the request grid as CSV export fields.

These fields:

Select this option to manually configure which fields should be used for CSV export. Once the option is selected you can setup the fields using the Change and Reset buttons.

Change...

Clicking on this button opens the CSV field selection dialog. You can then choose exactly which fields should be included in the CSV output.

Reset

Click this button to copy the list of fields in the HttpWatch request grid into the list of manually selected fields.