Starting a Model UN Club

Can anyone explain to me in basic terms what model un is? Is it like a club or something? I’ve looked online but all the explanations aren’t very clear. Thanks!

Model UN is a club in which you go to conferences that simulate “the UN General Assembly, UN Security Council, or other multilateral body, which introduces students to the world of diplomacy, negotiation, and decision making.” You essentially prepare for the conferences by assuming an identity, whether it be an actual person or a country, and writing arguments from their POV. For example, you could represent Kerry in a committee on how to handle ISIS (this is a made-up but you get the gist.)

Here is an in-depth guide to starting a MUN club: http://www.unausa.org/global-classrooms-model-un/how-to-participate/getting-started/start-a-model-un-club