The problem of collaborative work in open environment has become a center of academic and industrial attention. Creating, sharing, using, and storing knowledge in both tacit and explicit terms are essential to maintain competitive advantages in a highly competitive open market. This paper discusses the problem of work in collaborative and open environment where language is the main component of communication among people. Usually the concepts, terms, definitions understanding are missed or different between people and firms. Thus, sharing common understanding among all stakeholders is very crucial. The paper studies the problem of domain and adopt the Semantics of Business Vocabulary and Business Rules (SBVR) specification and draws a solution based on multi-user engagement to set up clear business language basis to share and use the knowledge as the best way.