Business opportunities have become a major concept in entrepreneurship research (Busenitz et al. 2014). Despite the wealth of works on this subject, the study of opportunities has often been approached from an individual perspective. Apart from the work of Carrier and Tremblay (2010) and those linking social network and business opportunities identification, few studies have focused on the study of opportunities in a collective viewpoint. The study of opportunities generated debate within the community of researchers about the nature of opportunities. Our contribution, with this work, consists in improving the understanding of the emergence of opportunities by focusing on the relationships between individuals. We try to understand how the relationships between individuals, or more exactly the outcome of intersubjective agreements, allow both creation and discovery of business opportunities