Make Transaction Codes be able to be applied to Classes

It is very difficult to track the details of revenue streams when all tuition gets lumped together and would be wonderful that when we create the class if we could assign a transaction code to that class created. So then I could pull a report and see what income all my "Ballet Classes" brought in and the income that the transaction code "Jazz Classes" brought in as well. Love DSP but the financial reporting side needs a lot of help in terms of making us be able to track our numbers well.