Chat and share files in Teams
Start a new conversation...
...with the whole team
Select Teams , then pick a team and a channel.
Select New conversation.
In the box where you type your message, say what's on your mind and select Send.
...with a person or group
Select Chat > New chat .
In the To field, type the name of the person or people you want to chat with.
In the box where you type your message, say what's on your mind and select Send
Reply to a conversation
Channel conversations are organized by date and then threaded. The replies in threads are organized under the initial post so it's easier to follow multiple conversations.
Find the conversation thread you want to reply to.
Select Reply, add your message, and select Send
Share a file
Sometimes words aren't enough, and you need to post a file to a channel conversation.
In your channel conversation, select Attach under the box where you type your message.
Select from these options:
Recent
Browse Teams and Channels
OneDrive
Upload from my computer
Select a file > Share a link.
If you're uploading a file from your computer, select a file, select Open, and then select Send.
You can always see all the files you post to a channel by going to the Files tab.