Setup
The whole package is contained in the AutoLOD folder resulting from the import. You can move it wherever you want, but it is recommended to keep the same folder structure. If you already own AutoLOD, the same folder will be used without any problem.
How to use
AutoLOD Impostors consists in an editor window. You can open it via Window->AutoLOD->Impostors.
Drag & drop the object to be processed into the ”Target” field. Please note that a MeshFilter is required otherwise the object cannot be added.