convocator
/kõ.vok.a.toɾ/Definitions
1. noun
A person or thing that convokes or summons others, especially for a meeting, election, or other gathering.
“The university’s convocator was responsible for organizing the annual graduation ceremony.”
2. verb
To summon or call together others for a meeting, election, or other gathering.
“The students were convocated to the auditorium for the school assembly.”