This study presents a model for supporting project managers to focus on the main tasks of a project network using a multiple criteria decision aid (MCDA) approach. A MCDA structure is important for dealing with this kind of problem, in the context of the project manager, when he/she solving a decision problem, taking into account several, often contradictory, points of view. A case study on the construction of an electricity sub-station is used to demonstrate the model proposed. As a result, managers can increase their performance in controlling project activities, particularly in a dynamic and changing environmen