= The Calendar Connector for Cisco Spark Hybrid is a feature that allows users to schedule and join Webex meetings from their Microsoft Exchange calendars. To integrate the Calendar Connector with Microsoft Exchange, an impersonation account is needed on the Exchange server. An impersonation account is a service account that has the permission to access other users’ calendars and send meeting invitations on their behalf. The Calendar Connector uses the impersonation account to monitor and update the users’ calendars, and to add Webex meeting details to the invitations. To create and configure an impersonation account on Microsoft Exchange, follow the steps in the deployment guide1. References := Deployment guide for Hybrid Calendar - Deploy Expressway-based Hybrid Calendar for Microsoft Exchange