Is there a documentation/tutorial for the 4.16 Built-in-cloth system?

Either i am doing something wrong or there is some problem. When i press enable paint tools, the section changes spatial rotation from upright to laying on the ground. When i try to paint it with brush - nothing changes. No matter what strength i set it continues being white. After numerous tries and reading thread i blindly tried “gradient” method a few times (i don’t really understand how it works, previously only painted with brush in maya) and it started working very crudely in physical body window while simulating, but it still doesn’t work in game.