1. Login as admin to https://admin.powerplatform.microsoft.com/home
2. Select the desired "Environment" and navigate all the way to "Dynamics 365 Apps"
3. Click on "Open App Source"
4. Search and select LeadAngel Lead Management
5. Click on "Get it Now" button to install the app
6. Install in desired environment
7. Go to https://make.powerapps.com -> Solutions and verify the LeadAngel was installed correctly