## (Optional) configure internal Jitsi authentication and guests mode
By default the Jitsi Meet instance does not require any kind of login and is open to use for anyone without registration.
If you would like to control who is allowed to open meetings on your new Jitsi instance, then please follow this step to enable Jitsi's `internal` authentication and guests mode. With this optional configuration, all meeting rooms have to be opened by at least one registered user, after that guests are free to join. If a registered host is not present yet, guests are put on hold into a waiting room.
If you prefer an open Jitsi instance, please skip to [Apply changes](#apply-changes).
Add these two lines to your `inventory/host_vars/matrix.DOMAIN/vars.yml` configuration:
Run this command for each user you would like to create, replacing `<USERNAME>` and `<PASSWORD>` accordingly. After you've finished, please exit the host.
**If you get an error** like this: "Error: Account creation/modification not supported.", it's likely that you had previously installed Jitsi without auth/guest support. The playbook can't yet rebuild all configuration files for some Jitsi services (like `matrix-jitsi-prosody`), which may cause such an error. **If you encounter this error**, we encourage you to:
- stop all Jitsi services (`systemctl stop matrix-jitsi-*`)
- remove the Jitsi Prosody configuration & data (`rm -rf /matrix/jitsi/prosody`)
You can use the self-hosted Jitsi server through Riot, through an Integration Manager like [Dimension](docs/configuring-playbook-dimension.md) or directly at `https://jitsi.DOMAIN`.
To use it via riot-web (the one configured by the playbook at `https://riot.DOMAIN`), just start a voice or a video call in a room containing more than 2 members and that would create a Jitsi widget which utilizes your self-hosted Jitsi server.