In this tutorial video, you will learn how to import garment assets made with MD or other DCC software into UE for cloth simulation. You can also check the detailed manual at: General Mesh Garment Imported into UE for Simulation and Rendering | Style3D Simulator User Guide
https://dev.epicgames.com/community/learning/tutorials/vwl1/unreal-engine-style3d-simulator-import-garments-to-ue-for-cloth-simulation