If an agent is not available, you may want to allow users to schedule a meeting. To configure this with Calendly, open the Missed Call options in the Cohere dashboard by going to Settings -> Incoming Calls:
By entering a Calendly URL, visitors will be prompted to schedule a meeting if an agent is not available:

Opening call scheduler programmatically

If a missed call Calendly URL is set, you can programmatically open the call scheduler by running window.Cohere.scheduleCall().