FoilageSpwaner scale meshes

Hi All,

I’m doing some testing with FoilageSpwaner. In my scene I have some small rocks, but I need to have the rocks much larger in size.
I did see some Unreal Twich episode that when meshes are to small you need to check the pixel size in the mesh editor and then
change the collision/shade radius is this correct? If not how would you change this?
Thanks in advanced. Decor