I'm a new to UE5 Please help

I interested to learn UE5. I’m very new. I have some question.
I load UE5

  • created project
  • created land
  • load magascan
  • chosed 3 layer
    then created Blendlayer assigned to material slot in landscape then open
    No option at all?
    How to get the option in blendlayer.
    Please help, thank you.