Given the exposure of the Internet and the Web, there is a significant impact on Web-based cooperative teamwork support which can be beneficial to many teamwork managers and normal team members who may be either computing or non-computing professionals. In this paper, we focus on our research into a more effective architecture for Web-based teamwork automation support and its corresponding innovative mechanisms for various perspectives including visual process modelling for teamwork managers and process enactment for team members in an asynchronous and synchronous manner. Our research prototype is implemented in Java and the data repository used can be an object-oriented or relational database.