Thanks to David Rosenthal, Senior PM in the Microsoft Teams Product Group for this tip.
In Microsoft Teams you can create a “private chat” with up to 50 people. Usually chat is used for more short/ad-hoc communications and Teams and Channels are used for more project/topic specific conversations, however, you might have a need to communicate to multiple people in a chat on a particular topic, or sometimes with the same people but focused on different topics.
You likely know you can start a chat with multiple people
You can even name the chat by clicking the pencil and giving it a name
You can even then search for chats by the name
And Pin chats to keep them at the top of you chat list
But what if you have a different topic to talk about with the same group of people? Up until now, I would @ mention the same 3 people, the existing chat would appear and I would have the chat there (meaning no topic separation)
What I didn’t realise was that you can create a new chat with a new name/topic with the same group of people. In the new chat hit the drop down on the left
Name the chat and add the people, it creates a new separate chat
Note, two chats with the same people in each chat: