Changing the software development process used by an organization is a challenging endeavor, a project in itself, which involves more than just software engineering; it also involves social engineering and psychology.
An organization can take various approaches to adopt the Rational Unified Process. A typical approach involves trying part of the Rational Unified Process in a Pilot Project before extending it to the entire organization.
Adopting the Rational Unified Process involves developing a Development Case, which is a project-specific version of the process.
The Development Case is typically a RUP configuration created with RUP Builder (and RUP Organizer) that may include a company-wide RUP plug-in that contains organization-wide process assets.
Tools to support the process must be put in place simultaneously with the process.
Professional education and tool training are integral parts of a carefully planned process change.