Remove not working people from chats
We just had a situation that one of our colleagues changed job. His account in 365 was disabled in our company but he is still present in our chats. There is no option to remove such "dead" account from chat. So now we have "unknown user" as a chat member and we can't add new colleague because of limited number of chat members.
Please add functionality to either remove such "dead accounts" from chats manually or even better automatically.
(Of course all the conversation with that person till this moment should stay.)
Removing People from group chats became available on desktop & mobile in Nov. 2019. Please see this article for details: https://support.office.com/article/leave-or-remove-someone-from-a-group-chat-7db55a67-0ba4-4409-a399-5ed502a1d094
Note: Your admin will need to turn on this setting to allow members to remove each other from a group chat.