Oh, and try these two totara help links,
https://totara.help/17/docs/what-are-centralised-notifications
https://totara.help/17/docs/seminar-notifications-1
Totara Learn Open Discussions
Seminar booking reminders
Re: Seminar booking reminders
Oh, and try these two totara help links,
https://totara.help/17/docs/what-are-centralised-notifications
https://totara.help/17/docs/seminar-notifications-1