As a SharePoint administrator, what level of configuration and flexibility do I have on eContractsTM?

We have taken utmost care to make sure that eContractsTM is built and implement using best practices end-to-end. IT personnel, familiar with SharePoint can extend the application with additional pages, workflow templates, list and libraries, views, reports etc.,like they would on any other SharePoint application or solution. However, care should be taken not to tamper with important controlling data relationships and business rules that affect the functionality of the application.