How to add co-host or co-organizer to an event using ms graph api's ?

Question

How to add co-host or co-organizer to an event using ms graph api's ?

Ritik joshi 6

we have different users and for them, I can create events with meeting in their calendars by using graph API but in Case any user is not available to attend the event so I want that any other co-organizer or co-host can attend that event, I don't know how to create events with a co-host or co-organizer

so here the organizers are tutors and attendees are students so I mean if any tutor is not available to take the class so there should be a co-host or co-organizer(co-teacher) of that meeting( class ) so they can take the class in place of an unavailable tutor

2 answers

Your answer

Answer 1

Hi, Ritik Joshi (sorry, hard to find the exact person to at)

I believe that you do this by amending a meeting participant's 'role' type in the 'participants/attendees' key/value pair in the parent event:

https://learn.microsoft.com/en-us/graph/api/resources/onlinemeeting?view=graph-rest-1.0

Here's the breakdown of a 'meeting participant' in graph:

https://learn.microsoft.com/en-us/graph/api/resources/meetingparticipantinfo?view=graph-rest-1.0

Ensure that you change the 'role' value to "coorganizer" as per this learn link would suggest. :)

Label	Value
Request Type	`PATCH`
URL	`https://graph.microsoft.com/v1.0//me/onlineMeetings/{meetingId}`
Headers	'`Content-Type`': "`application/json`"
Body	See below

{
  "participants": {
    "attendees": [
      {
        "upn": "******@domain.tld",
        "role": "coorganizer",
        "identity": {
          "application": null,
          "device": null,
          "user": {
            "id": "i-represent-a-microsoft-guid",
            "displayName": null,
            "tenantId": "i-represent-a-microsoft-guid"
          }
        }
      }
    ]
  }
}

Answer 2

Bhanu Kiran 3,616

Hi @Ritik joshi ,

You can request /me/onlineMeetings/createOrGetAPI, and then add the organizer to the request body.

Please refer the below links
https://learn.microsoft.com/en-us/graph/api/onlinemeeting-createorget?view=graph-rest-1.0&&tabs=http

Hope this helps.

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Eliot Cole 6 Reputation points

2026-03-09T12:19:25.36+00:00

Apologies, but, unfortunately this does not answer the question.

Multiple organisers are clearly an option as we can affect that via meeting options in Teams.

However, this is not represented by the linked documentation and imagery provided.

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How to add co-host or co-organizer to an event using ms graph api's ?

2 answers

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