LOD Numbers and LODs Distance are greyed out

The title says it all. I can’t change anything in those fields whatsoever.

To enable LOD Distance disable Auto Compute LOD:
19235-
Am not sure about LOD Numbers but i think that setting wont be enabled until Epic implements [SimplyGon][2].

This is correct. For the moment you need to import your pre-made LODs when you import your StaticMesh. A future release of Rocket will be able to also import pre-made LODs on StaticMeshes that already exist in the Content Browser.

Ah, thank you Satheesh. I got it working.