Many organizations create teams and channels to allow users to work together on projects or to manage a particular customer. If you have a model-driven app, you can display data from the Common Data Service in Microsoft Teams. This allows users to access data where they are working and not have to switch and navigate to other applications.
You can add forms and views from a model-driven Power App to tabs in channels.
To add a record from the Common Data Service, you start from a channel in the Microsoft Teams app and click on Add a tab. The following page will be shown:
You should select the Dynamics 365 app and you will see the following page:
On the page shown in the preceding screenshot, you should select your environment and a model-driven app by clicking on the pencil icon at the top of the page. This will produce the following dialog: