Users must use Two Factor Authentication - locked out?


I am trying to setup a demo environment for our IT department, and we would require MFA for all users. I see the option under Permissions>user>(pencil)>Users must use two factor authentication. But when hover over the switch it is blocked and greyed out.
Is this a paid for feature or am I doing something wrong?

Server Setup Information

  • Version of Rocket.Chat Server: 6.6.3
  • Operating System: Ubuntu 22.04
  • Deployment Method: Docker
  • Number of Running Instances: 1
  • Proxy: nginx/NPM
  • Firewalls involved: yes