mod/organizer/mod
From MoodleDocs
You can find the documentation for the "Organizer" plugin on the developer's website::
Academic Moodle Cooperation: https://academic-moodle-cooperation.org/
Plugin description
https://academic-moodle-cooperation.org/mod_organizer/
Documentation
Organizer: manage time slots: https://academic-moodle-cooperation.org/anleitungen/terminplaner-termine-verwalten/?lng=en
Organizer: advanced options and tips: https://academic-moodle-cooperation.org/anleitungen/terminplaner-erweiterte-funktionen-und-tipps/?lng=en