To add additional subjects (witness, plaintiff, defendant, relative, etc.) to your file when entering a new case they must be added in "Case Type" under the case customization section in settings.
1. Click on Case Type then select the edit box to the right on the right side of the section.
2. Click in the field labeled "Additional Subject Type" to add more subjects to this case type. Please note all of your previously created subject types will show up as options in the drop down box when you click in the field.