You'll get the Jitsi Integration settings in Settings > Setup > Jitsi Integration.

• Enable Jitsi meetings.
• You can choose non-admin users to manage meetings. Admin users will always get access.
• Then the permitted users will get a new menu item in the left menu. Labeled as Jitsi meetings.
  Please note that, if the user's left menu or default left menu is already edited, then the Jitsi meetings won't be shown by default. Then you can add the menu manually from the left menu settings.
• You can also enable this for clients. Then you can share meetings with them.