In this tutorial will show the UE5.7 - PCG plugins how to make it work, and demo the show case how to use it on the world building, such as the tree, rock and grass.
https://dev.epicgames.com/community/learning/tutorials/98dP/unreal-engine-fortnite-procedural-content-generation-framework-pcg-demo-pcg-graph-and-pcg-mode