A company wants to use the canvas app in Microsoft Teams and asks you to help. First, you create the app and export it in a zip file using the "Add to Teams" function. Then, you open Microsoft Teams to add the zip to Teams. But you cannot find the "Upload a custom app" button. 
What two steps should you take to solve this product integration problem?

Answer options:

A.Add Power Apps to Teams
B.Pin your app in the Teams navigation bar
C.Enable Upload custom apps
D.Add App Studio to Teams
E.Create a custom app policy

Correct Answers: C and
E. 
As a Solution Architect, you need to understand what is required to integrate Power Platform and Microsoft products, like settings for Power BI dashboard integrations with Power Apps portals or settings for integration between Power Apps canvas apps and Microsoft Teams. 
There are two ways to embed the Power Apps app into Microsoft Teams: a tab app or a personal app. Both types of apps, model-driven and canvas, can be added to the Teams as a tab app. But only the canvas app can be embedded as a Teams (personal) app. 
To make a Teams app from a canvas app, you need to export your canvas app in a zip file using the "Add to Teams" function in the Power Apps portal. Then you can upload the zip file to Teams by clicking on the "Upload a custom app" button on the left bottom of the Teams App panel. 
If you don`t see the "Upload a custom app" button, you need to ask the Teams administrator to enable settings for the users to upload their apps without submitting them to the Teams App Store. An administrator should create a new Custom app policy and enable the "Upload custom apps" option. 
Admin can do both these steps in Microsoft Teams admin center (Number 1) under Teams Apps/Setup policies section (Number 2). First, on the "App setup policies" screen, an admin needs to create a new app setup policy by selecting the "Add" button. Then on the new screen, provide the policy name (Number 3) and optional description. And, finally, set the slider to the "On" position to allow the custom apps upload (Number 4). The Upload of custom apps is also called "side loading." This approach helps users to run the Teams apps without uploading them to the Teams app store. 

Then you can open Teams Apps, select the “Upload a custom app” button and upload your zip file. 
All other options are incorrect. 
For more information about Power Platform integration with Microsoft Teams, please visit the below URLs: 

https://docs.microsoft.com/en-us/powerapps/teams/embed-teams-app
https://docs.microsoft.com/en-us/MicrosoftTeams/teams-custom-app-policies-and-settings#custom-app-policy-and-settings