Can't create a landscape layer info

I can’t find the plus or magnifying glass symbols, I’ve made a landscape and assigned a material, but can’t see the “+” symbol

I’m in the same boat. I even ran the tutorial and got stuck at this spot. FYI, even though I have engine content showing doing a search on “Landscape_Material” is a fail. I found the odd, black, material in the tutorial folder by doing a search with Explorer, but this was strange.