More and more business processes are moved to the web to have all information easily accessible to everyone. High requirements are raised for business process automation – software systems should be easy to use, multilingual, expandable, and flexible. They should do the major part of organizational tasks. In the current work, the conference system model is proposed and implemented using Tapestry framework, which gives conceptual clarity and possibilities to expand system in the future. Much attention is devoted to process automation – sending of messages at predefined time moments, calculations, process stages management is executed by software agents. Only parameters are set by the administrator. The system enables executing of several conferences simultaneously and saves their history.