When it the box checked, there will not be a visible Send button and if you press Enter in hopes to create a paragraph break, it will send whatever has been typed.
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Find a message that has a keyword that you remember Start typing a keyword into the command box at the top of Teams and press Enter.
Since I use a controller to play, I just move the joystick a bit and the text area goes away.
Group chat Use a group chat when you need to talk to a small group of people.
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