How to install and configure Aptivio for Dynamics 365 Customer Engagement on your environment
First go to https://appsource.microsoft.com/
On the search bar type: "Aptivio for Dynamics 365 Customer Engagement" and select the app on the results.
Download Aptivio for Microsoft Dynamics App by clicking on the button "Get It Now".
Make sure to login to the correct Sandbox or Org to ensure the Package is loaded in the current instance.