URGENT! How to use world composition

Hi, I am using ue4 4.18.3 .
I have a problem with world composition, that::----
How to use different heightmaps and still sculpt on both at once
If we add landscape with world outliner then we can’t use heightmaps, or if we use different levels then we cannot paint on both at once please help me. I am in big trouble

with world composition and level streaming you should be able to sculpt on multiple levels as long as they are both loaded.

did you try this?