How do I create LODs for animated character UE4.20?

How do I create LODs for an animated character in UE4.20 now that Simplygon is not integrated in this version? I know that there is a proxy geometry feature in the latest version of UE4 but this is only for static meshes. I went to the Simplygon website but there are only .zip files for Simplygon and there are no longer .exe files. Also I dont know how to install the zip file content to work with UE4.20 I dont know if it is even compatible anymore. Can someone tell me if it is even possible anymore to create LODs within UE4 latest version without going to a different third party 3D software?

I want to know this as well. Been working on a project that really needs LODs for its skeletal meshes.