To create a sublevel, first you will need to create an empty level, right click on your content browser inside your mod folder, and create new level. Name it with the gamemode prefix and then the level name, so like SKM_CabbageLand.

Inside, you will see the Persistent Level, which includes your sublevel SKM_CabbageLand. First, set your default streaming method to “Always Loaded.” Note: You will need to do this for every new sublevel you create, as it will revert back to “Blueprint Only.”

author: SoomRK

source: trt.ls/2ae1f4