I do learn a lot during the making of Project Titan art jam along, my initial idea was to try ClothSim on my Lucy's skirt and flaps. Due to her complicated design of the skirt, it might not promising to be as good as it was supposed to look like. When the release of recent ClothSim In version 5.4, I see its potential and capability. So I tried and I fail, I try few attempted and finally I manage to make it!
I'm not an expert on the technical side and rigging, so it took me about 2 weeks to figured out this problem and I almost give up. (TAT)
I'm happy with the outcome and it serve the purpose of using ClothSim in this project.
I hope through this sharing can help those who wish to achieve same result with simple method, regardless how complex the design could be.

https://dev.epicgames.com/community/learning/tutorials/jOrv/unreal-engine-chaos-cloth-tool-properties-reference
If you wish to have better understand on each functionality, you may go to this official pages.
https://www.youtube.com/watch?v=vrc6IDtCIg0
I'm using this tutorial to apply my skirt and it works!
Credit to Spectral Ink for the technique and credit to Meephz for the suggestion.