The type of work order is indicated by the setup of the ticket. If the party is COD then you would only list an address in the top section of the callsheet/job record. This would indicate that this is the job location and the party responsible for paying for service. If the party is warranty, then the warranty company will be listed in the top section of the callsheet/job record, and the service location in the bottom of the callsheet/job record.
May I suggest attending the Rossware training classes at this year's ASTI convention if you're able! You'll get a ton of helpful information that will cut down on your learning curve.