To add a bot, tab, connector, or messaging extension to Teams, click Apps in the bottom-left corner of Teams.
From there, you can browse available apps or search for a specific app.
Note: Team owners can restrict who can add apps to a team. Some apps can be installed only by a team owner, as they require additional permissions.
You can give others quick access to a great app by sending them a link to it. To do this, select More options next to the app name while you're browsing, then Copy link. The link is copied to your clipboard. From there, just paste into a message and send!
Add a tab to a channel or chat
When you're working in Teams, click Add a tab at the top of your channel or chat. Select the tab you want from the tab gallery.
Add a connector to a channel
Go to the channel, click More options > Connectors, then choose a connector from the menu.
To add a bot, tab, connector, or messaging extension to a team, go to the desktop or web app.