The increasing influence of information technology in enterprises expands the demand for closer coordination and cooperation between business and IT. In a qualitative survey study we researched the relationship between IT strategy development, IT project portfolio and enterprise architecture management as well as relations between business and IT. As result a Business-IT management reference process model based on the Business Process Model and Notation (BPMN) 2.0 was developed. During the research process it became evident that visualization of coordination and cooperation within business processes needs to be improved gaining higher readability and intelligibility. Based on these requirements we present in this paper five domain-specific tasks and a new marker for BMPN 2.0, which are able to visualize coordinationspecific tasks in processes. The proposed extension will be linked to theoretical concepts about cooperation. Two exemplary processes (developing an IT strategy and filtering of relevant IT projects) will illustrate the usefulness and higher readability of the new types and marker.