Dmitri -- I understand your frustration. To the best of my knowledge, the customizations are limited in the paid version to the same that you are seeing in the free version. So, the logical course of action would be to request an enhancement. But your logic would be flawed. From what I hear, the enhancement list for the accounting software is quite long. I have seen a request for an Australian tax report that has been on the boards for over 2 years. Additionally, in windows version 11.08 - a bug was introduced with the customized style sheets for invoices -- and that still not been fixed (it's been at least 7 weeks - which is too long for a commercial piece of software).
Please don't misunderstand me. I think the accounting software is very good and does a good job. However, it is not a primary revenue generator for the company -- so my guess is that it probably has a lower priority in terms of getting attention/enhancements added. Just my 2 cents worth.