In cases where a Client has credit that you would only like to be allocated for use with a particular Job, you can use our Assigned Credit feature:
Navigate to System > Settings > Activity and enable the ‘Use Assigned Credit’ checkbox.
Then head to the Job where you wish to assign credit.
Within the Student’s panel found within the Job’s main page, you should see a purple pen & paper icon next to a Student’s listing on the Job - select this to open the Edit Student Charge Rate panel, from where you can assign credit via the checkbox before specifying how much credit to assign.
Note: Assigned credit only limits the amount of credit that can be spent on a Job for a Client. That credit is not just limited to that Job, so it can be used against any raised Invoices.