An enhancement that is specific to your requirements.
We charge for our time, to understand your requirements and to scope out the project.
Not everyone is used to instructing the development of a software solution, to make this easy we have put together a guide which you may wish to review. You can see the Guide to writing a CRM brief here
A clear well written initial brief will save you a lot of time and therefore cost, it will also enable us to achieve your objective in far less time that would have been the case without a well written software brief.