Login as admin to
https://admin.powerplatform.microsoft.com/home
Select the desired
Environment
under the Manage menu. Click the three dots next to the environment name, go to Resources, and then select
Dynamics 365 Apps
.
Click on "Open App Source"
Search and select
LeadAngel Lead Management
Click on "Get it Now" button to install the app
Install in desired environment
Go to
https://make.powerapps.com
-> Solutions and verify the LeadAngel was installed correctly