1. Go to Field Explorer, Parameter Fields, and click on the new icon to create a new parameter.
  2. Mark Allow Multiple Values checkbox.
  3. Click on the Set Default Values button.
  4. Select the appropriate table and field names from the drop-down.
  5. Click the >> button.
  6. Select the first line (blank line) and click on Define Description. Enter your desired Description and leave the Value field blank.
  7. Change the Display drop-down to "Description" and the Order to any sort order that you would like.
  8. You can continue to enter descriptions for all the other Default Values listed.
  9. Click OK and drag the parameter field into your details section and suppress the field.