Credit Note
This option is available for if you want to cancel an invoice for some reason. It produces a
negative invoice or credit note in respect of the original invoice, and all jobs included in that
invoice will be reduced to a status of 'delivered'. It is not possible to raise a credit note for part of
a job. The only way to achieve this is to credit the entire job, adjust the price and then re-invoice.
Undeliver
This is most often used if you have accidentally delivered the wrong job! It makes the job into a
'confirmed' job. Don't forget to adjust the status of the job to reflect its current stage.
Unconfirm
This is needed to change the status of the job so it is no longer a live job. This needs to be done
if you want to delete a job, because you can't delete a live job.
