Help - first time using rhino

It is my first time trying rhino and I need to make a pavilion. However, if I chose the surface in the grasshopper to put the pattern, it seems like doesn’t work.
I am so confused. Please help
bone of model copy 3.3dm (3.7 MB)

You forgot to upload the grasshopper file too.

I just chose the surface on the grasshopper and showed it like this

Hi -

… and that is completely normal, yes.