Newbie: Swagger - can you hide some of the contents or condition it?

Hi,

Is it possible to hide some of the swagger contents from customers or condition it so that some customers can see some of the contents while others can see other contents? At the moment everything is exposed to the whole world, which is not what we want. In addition, how do we secure the swagger UI (so that it is not exposed to the entire world)? References or specific examples would be very helpful. Many thanks!

Sylvia