1. Open Editor (any project)
2. Create new Material
3. In new material, create two texture samples (any texture)
4. RMB, create a landscape layer weight node
5. Duplicate node
6. Attach a texture to each weight blended layer in the "layer" input pin.
7. Attach one layer output to the base of the other layer weight, attach the next layer output to "base color".
8. Save and close the material
9. Create new landscape
10. Attach material to landscape in details pane
11. Open landscape mode>paint
12. In the Layers pane, press the + sign next to each layer>weight blended>ok