The Calendar agent is an Instant Messaging component that provides pop-up functionality to Calendar and Instant Messaging users. Using tools provided with Instant Messaging, you can start, stop, restart, or check the status of the Calendar agent as well as monitor its activity through log files. See Stopping, Starting, Refreshing, and Checking Instant Messaging Components for information on administering the Calendar agent component. Also see Chapter 11, Managing Logging for Instant Messaging for information about Calendar agent logs.