Hello @Aluri Srinivasarao , Thank you for reaching out. Unfortunately, we yet do not have Graph APIs available in Teams for creating Live Events. Only using Powershell you can configure the Teams Live Event policies for now.
You can read more on this here:
- https://learn.microsoft.com/en-us/microsoftteams/teams-live-events/set-up-for-teams-live-events
- https://learn.microsoft.com/en-us/microsoftteams/teams-live-events/set-teams-live-events-policies-using-powershell
I would also recommend you take a look at this post (if not already looked into): https://techcommunity.microsoft.com/t5/teams-developer/microsoft-teams-api-for-live-events/m-p/1418908
Here you would find an alternative solution to set up the Live Meeting using APIs.
Hope this helps.
Do let us know if this helps and if there are any more queries around this, please do let us know so that we can help you further. Also, please do not forget to accept the response as Answer; if the above response helped in answering your query.