Business process modeling is a valuable technique helping organizations to specify their processes, to analyze their structure and to improve their performance. Conventional process modeling techniques are proven to be inefficient while dealing with non-repetitive, knowledge-intensive processes such as Case Management processes. In this work we use the MAP notation to model a Mortgage Approval Process as defined in Banking. To increase the navigability and practical value of map models, we extend the MAP notation with the concepts of Roles, Relations between roles, and Role Configuration Rules.