In this tutorial, we show you how to create a new level in your project and turn it into a digital convention center using assets from the Content Examples project.
If you don’t know, the Content Examples project is a massive repository of knowledge regarding Unreal Engine and is set up very much like a convention center. It contains a wealth of knowledge and can be modified for other purposes.
https://dev.epicgames.com/community/learning/tutorials/x19n/creating-a-new-level-as-a-digital-convention-center-in-unreal-engine