If you need to have focused, private conversations with people on your team, create a private channel. Learn how to create and use private channels in this video tutorial from Microsoft.
Most channels are standard ones — everyone on the team can see them as well as view and participate in conversations, share files, and more.
With a private channel, members of a team must be specifically added to it to participate, see content, and to see the channel appear in their list of channels.
This step-by-step tutorial will show you how to create and use private channels in Microsoft Teams