Usages of организатор
Моя подруга работает организатором конференции и уже устала.
My friend (female) works as the organizer of the conference and is already tired.
Он отказался от второго доклада, потому что устал, хотя организатор всё-таки был доволен первым.
He refused to give the second talk because he was tired, although the organizer was still satisfied with the first one.
Elon.io is an online learning platform
We have an entire course teaching Russian grammar and vocabulary.