First of all, we analyze the planning activities interactions of a project. It will define the best order of execution of planning activities. To analyze the interaction among those activities we base on PMBOK (2000). The PMBOK lists the main activities related to the project management and indicates information input and output for each activity. Based on the interactions, we insert the data on the DSM (figure 3) and process it (figure 4). Activities of Quality Management, Risk Management and Integration Management are retired of the process because they provide and receive information of almost all activities. Consequently, they play a role of integration activities and must be considered along the process. Other information input related to historical data, premises and restrictions depend on the office and the product to be developed and must be considered accordingly to the office.