# Zoom Calendar [Zoom Calendar Service](https://explore.zoom.us/en/products/zoom-m) is a fully integrated calendar that works in the Zoom client. It simplifies scheduling for meetings, offline events, and appointments. ## Key features - **External booking** Allows external contacts to schedule appointments directly on your calendar. No extra integrations required. - **Shared calendars** Creates team calendars for collaboration or general-purpose use. - **Resource calendars** Manages reservations for conference rooms, workspaces, or other resources. - **Delegate scheduling** Authorizes users to schedule Zoom Meetings on behalf of others when they have calendar access and scheduling privileges. For setup instructions, see [Enabling Zoom Mail and Calendar](https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0058589). ## API features and API access Zoom Calendar RESTful APIs let developers manage events, secondary calendars, and access controls. You can use these APIs to: - Automate scheduling and event management. - Build private services tailored to your organization. - Develop public applications for the [Zoom App Marketplace](https://marketplace.zoom.us/). To learn how to obtain credentials and start building applications, see [OAuth 2.0 for Zoom](/docs/integrations/oauth/).