How to disable register on self-hosted AppWrite?

I don't want anyone on internet being able to register on my instance of AppWrite.
Yes, I can limit access to particular projects in Security, but still anyone can register on my instance and create new projects.

Ah, just found env variable: _APP_CONSOLE_WHITELIST_ROOT This option allows you to disable the creation of new users on the Appwrite console. When enabled only 1 user will be able to use the registration form. New users can be added by inviting them to your project. By default this option is enabled.
https://appwrite.io/docs/advanced/self-hosting/environment-variables#general