There are four other fields listed in the Extra Fields button:
Location: This is the physical geographic location where this job will take place. This field defaults from the Client main form, or can be selected from the field label list view.
Territory: The sales territory getting credit for this job order. This field defaults from the Client main form or can be selected from the field label list view.
Referral: Advertising source used to get this job order. This field defaults from the company master or can be selected from the field label list view.
Industry: Industry background for the job and the desired applicant. This field defaults from the company master or can be selected from the field label list view.