Type @, followed by the user name or email ID and select them from the list pops-down. Those users will get a notification when the message is posted. They can filter the messages based on Mentions. You can also mention a channel or team with @. This is an easy way of pointing a message to a particular user or team.
When you want to save a message tap the save icon(Shown below).
The message will be saved and can be retrieved from the saved messages (Shown below)
This will list out all the saved messages by you.
Tag your favorite team so that it will appear in the top of the favorites list.
From the teams list, click on the ... button and select Favorite
With teams you can collaborate on files with other members. Every team will have a Office365 group created in the back-end and will store all the information on Onedrive. This will allow collaborating on the files easily. Whenever any team member shares a file, click on it to open and edit. If you make any changes those will be saved to the document automatically. This helps working on a same file among teams without actually sharing them separately by creating duplicates.
You can share/upload files without leaving teams. Click on the 'Clip' icon under the compose area and click on "Browse Teams and Channels".
You can browse any channels or teams by clicking on the Up arrow from the top-left corner of the below window.
You can select any file and click on 'Share Link' to share the file in the conversation.
You can add a title to your chats by expanding composebox. Click on the 'A' with a pen icon to open the compose box. You can type anything and format the lines just like you do in MSWord.
The compose box looks like below. Add a subject where it says 'Add a subject' and start composing the message. You can use the basic formatting like Bold/Italics/Numbered/Bullets/Highlight and many more.
A sample chat with a subject and formatted message will look like this.
It will look like the below one after sending.
For people who have difficulty using the mouse, keyboard shortcuts provide a great alternative.
In the Teams app, press ALT + / to display a list of available keyboard shortcuts.