Deploying the Outreach Extension in Office365 (Office365 Admin Steps)

Sign in to the Office365 admin portal (https://portal.office.com )
Go to Settings > Services & add-ins in the left-hand navigation
If you are using the Preview UI, click “Show All” > Settings > Services & Add-ons in the left-hand navigation
Click “Deploy Add-In” at the top:
Select “I want to add an Add-In from the Office Store” and click “Next”:
Search for “Outreach Sales Engagement” and click “Add” next to the result:
Specify who has access on the next screen. You can deploy to everyone, specific users or Azure AD groups, or just yourself for initial testing. In order to allow users to remove the add-in once it is deployed or make it optional, click (View Options) below the radio buttons:
Click “Deploy Now” to initiate the deployment. It may take up to 12 users for the add-in to be fully deployed to users.
Click “Next” and “Close” to complete the process.