Hi @Arun A ,
Hope you are doing well,
Based on my research y knowledge ending a meeting when an organizer or participant leave the current meeting is currently not available using Microsoft Graph API .
Since this Feature/Functionality is presently not available, you can submit a feature request idea using this support link, which will be monitored by Microsoft team and make the enhancements to Microsoft Graph APIs. I will also upvote for you.
Refer this links-
https://learn.microsoft.com/en-us/graph/api/subscription-post-subscriptions?view=graph-rest-1.0&tabs=http#contact-event-and-message
https://learn.microsoft.com/en-us/graph/api/resources/onlinemeeting?view=graph-rest-1.0#properties
Hope this helps.
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