Easy Tech TutsHow to Add a New Person to a Microsoft Teams Chat Easily 2026
By Impran M N
Expanding a one-on-one Teams chat into a group conversation, or looping in a manager mid-thread, involves a quick decision about how much of the prior conversation the new person should see. This guide covers adding participants and managing chat history privacy at the same time.
01Open the conversation
Select the individual or group chat you want to add someone to from the left sidebar.
02Open the participants panel
Click the View and Add Participants icon in the top-right corner of the chat window.
03Search for the new person
Click Add People, then type their name, contact handle, or external email address.
04Choose a chat history option
Select whether to include no chat history, a specific number of past days, or the full conversation history for the new member.
05Confirm the addition
Click Add to finalize the merge and verify the updated member count in the chat.
Frequently asked questions
What happens when I add a third person to a one-on-one chat?
Adding a third member automatically converts the conversation into a new, separate group chat.
Can I control how much history a new person sees?
Yes, you can choose to hide all past messages, share a specific number of days, or release the full chat history.
Can I add someone outside my organization to a chat?
Yes, external guest email addresses can be entered the same way as internal directory names.
How do I confirm the new person joined successfully?
A confirmation notification banner and an updated member roster count both indicate a successful addition.
Watch the full walkthrough
The same steps, demonstrated on screen from start to finish.
