How to Install Add-ons to Domain

Step 1: Whitelist add-ons for domain

Check if all users in your domain can install apps from G Suite Marketplace:

Allow users to install add-ons from G Suite Marketplace.

Step 2: Install for all users in your domain

1. From your Google Admin console, go to Apps > Marketplace apps and click the plus sign on the right to Add Marketplace apps:

Access G Suite Marketplace from Google Admin Console.

2. Find G-Accon add-on and press the Domain install button:

You will see this confirmation window:

3. Accept Google Permissions

Check out this Google support page for more information: