Update virtualeventwebinar.md

Author: halleclottey-msft

api-reference/beta/resources/virtualeventwebinar.md

@@ -41,7 +41,7 @@ Inherits from [virtualEvent](../resources/virtualevent.md).
 | description | [itemBody](../resources/itembody.md) | Description of the webinar. Inherited from [virtualEvent](../resources/virtualevent.md). |
 | displayName | String | Display name of the webinar. Inherited from [virtualEvent](../resources/virtualevent.md). |
 | endDateTime | [dateTimeTimeZone](../resources/datetimetimezone.md) | End time of the webinar. The **timeZone** property _can_ be set to any of the time zones currently supported by Windows. For details on how to get all available time zones using PowerShell, see [Get-TimeZone](/powershell/module/microsoft.powershell.management/get-timezone#example-3-get-all-available-time-zones). |
-| externalEventInformation | [virtualEventExternalInformation](../resources/virtualeventexternalinformation.md) collection | The external information of a webinar. |
+| externalEventInformation | [virtualEventExternalInformation](../resources/virtualeventexternalinformation.md) collection | The external information of a webinar. Returned only for event organizers or coorganizers. |
 | id | String | Unique identifier of the webinar. Inherited from [virtualEvent](../resources/virtualevent.md).|
 | settings | [virtualEventSettings](../resources/virtualeventsettings.md) | The webinar settings. Inherited from [virtualEvent](../resources/virtualevent.md). |
 | startDateTime | [dateTimeTimeZone](../resources/datetimetimezone.md) | Start time of the webinar. The **timeZone** property _can_ be set to any of the time zones currently supported by Windows. For details on how to get all available time zones using PowerShell, see [Get-TimeZone](/powershell/module/microsoft.powershell.management/get-timezone#example-3-get-all-available-time-zones). |