Event (emphasis on "e") is a fashionable, albeit very absurd, borrowing of the English word event , which in Russian means only an "event". But the event is not simple ("the rain went in the village of Pokrovka") and the media ("Galkin and Pugacheva celebrate the anniversary of the wedding").
A person who organizes various kinds of events, presentations, parties and celebrations, is called an "Event Manager". The tasks of such a person include preparing for the celebration, choosing a place, music, decorations, photographers and even a heap of all useless fuss, just to make the party a success!
Event is in the list: Slang