You might be able to do the same method as the guide. But the other way is pretty much identical, except you're just separating everything and the data in the ROOT LOD dummy, is what will be in the .lods file
Im going off memory here, so for a model with 4 pieces, (tower_lod0, tower_lod1, tower_lod2, tower_lod3), you would export each one independently. Then you would need to make a .lods file which is just a text file. The information you enter should be in the following format:
model={
lods={
{"tower_lod0.edm",250.000000};
{"tower_lod1.edm",750.000000};
{"tower_lod2.edm",2000.000000};
{"tower_lod3.edm",50000.000000};
};
collision_shell="tower_lod0.edm";
}
The last part declares the collision file. Then numbers after declaring the model name is the maximum range in meters that the specific LOD will be rendered