Making zoom calls joinable via single click

Hi I've been told theres a way of making it so people can join zoom meetings with a single click which made me purchase it.

However when I've tried this using the pro plan, unless they already have zoom it appears people have to click join via browser, accept a policy and go through many steps before they can join.

Does the one click feature only work with people who already have zoom?

Also on a side note I can't find how to contact zoom support.

Thanks