The Google Workspace Marketplace allows users to install the application at an individual level ONLY if your Google account is not a google workspace or G Suite account.
If you are a Google Workspace or G Suite domain administrator, you will se a button “Domain Install“. This button allows you to authorize the application to other users of your domain.
More than that, it also give you access to way more features allowing you to:
There you have it! The process of installing Shared Contacts for Gmail Add-on in Google Workspace Marketplace for the whole domain, is the exact same as a user would install it for an individual. Click here to see how to install the Add-on with ease!