Conversations among multiple participants for collaboration and communication in Teams
Hello
My name is Veejay, an Independent Advisor and a Microsoft user like you and I'll be glad to help you.
If you do not see the delete option, you may double check to your Teams/IT admin if this is disabled in the Messaging policy.
https://docs.microsoft.com/en-us/microsoftteams...
Please let me know if you have any questions or concern.
Thank you