Several Failed attempts at making a paint texture tool work.

Okay So i’ve tried several youtube videos on how to be able to paint textures for a simple game i’m making to help me learn and get used to the engine. But each time I try. It won’t let me. Things might be outdated but idk. Where my textures should be in the pain area under Landscape Mode says "There are currently no target layers assigned to this landscape. Use the buttons above to add new ones or populate them from the material(s) currently assigned to the landscape. What I think might be the problem is that I noticed that the map is broken into pieces that I can select. So I selected all of them and grouped them. Which I don’t think should effect anything just for more info.

For the images, the first one is what it looks like on my end. The bottom left with the layers has that text. Than on the bottom right it shows my texture where it should be.

For the second picture is what the material code looks like and how its set up.

Just trying to be able to paint textures and figure this out. Any help is appreciated.