The Professional Sales Organization | 901 followers on LinkedIn. The Professional Sales Organization in Temple University's Fox School of Business. Bringing you PSO updates and news. | The Professional Sales Organization (PSO) seeks to develop sales excellence in students by teaching consultative negotiation, personal influence, and effective communication techniques that will allow students to create solutions and build meaningful business relationships. In addition, PSO aims to foster high quality leadership development in students through opportunities in the organization’s management team.