“…Some authors have insisted that various competencies are critical for managing in a PBO (Bredillet et al, 2015;Bredin, 2008;Brière et al, 2015;Crawford, 2005;Danneels, 2002;Frame, 1999;Gareis and Huemann, 2000;Medina and Medina, 2014;Melkonian and Picq, 2011;Muffatto, 1998;Ruuska and Teigland, 2009;Söderlund, 2005;Suikki et al, 2006;Verona, 1999). More generally, and basing our assumptions on the work of many authors (Drejer, 2001;Le Deist and Winterton, 2005;Nordhaug, 1998;Sanchez et al, 1996), we define "competence" as the ability of an individual, a team, or a company to mobilize and combine resources (i.e., knowledge, skills, and attitudes) in order to implement an activity in situation.…”