Level Design: Addon/Modular system to build form prefab models?

Audio guy here with no experience in level design in UE4 asking on behalf of the team.

We are currently looking at getting some help from some non-game dev friends to help build levels. They have done a lot in the map maker of Starcraft and Rust, but they have not touched UE4. Are there any addon/plugins that modify the map building experience to something similar to these games that allow them them to choose from prefabbed items and quickly have objects snap together while mitigating some of the learning curve of UE?

Thanks.

Unreal already has those features you’re asking for. You can drag objects directly from the content browser and into your viewport to place them in the scene and the snapping settings in the top-right corner of the viewport provide help with positioning.