The Non Pooling Chunk Manager is very simple in design. Since no Asset Chunks are pooled, all World Cells passed to it from the World are simply passed on to the Chunk Streamer of the LOD Group user, which removes/unloads the Asset Chunks from the scene.
Conversely, when a World requests Asset Chunks be attached to a set of World Cells, those World Cells are simply passed to the Chunk Streamer so that it can stream in new Chunks for them.
You can add this component by selecting a game object and then selecting from the Top Menu Bar:
Component -> Deep Space Labs -> -> SAM -> Chunk Managers -> Non Pooling Chunk Manager
or by selecting a game object and using the Add Component menu via its inspector:
Component -> Deep Space Labs -> -> SAM -> Chunk Managers -> Non Pooling Chunk Manager