Enterprise Computing requires seamless collaboration between business parties. One major factor that decides the success of collaboration activities is coordination. In this paper, we introduce an Extended Collaboration Description Language (X-CODL) as a plug in to define collaboration-related coordination requirements in a uniform manner. Bound to multiple coordination points of discussion threads, X-CODL realizes fine-grained coordination control. We also propose a mechanism to formally verify and reason about X-CODL specifications through Colored Petri Nets.