Mesh With IGUANA for Finite Element Analysis

Hi all. There is a problem with the mesh in the calculation program. I decided to build it in grasshopper. I found the plugin “IGUANA” and even a similar topic: Mesh for Finite Element Analysis. The author of this topic solved his problem, but I don’t understand how he did it. Many people have asked him for help, but he did not answer. Can someone help with a solution to this problem?
I need a similar result as in the picture:

The only difference I need is to have my large surface divide at the points of the smaller surface, as shown below:

GrassQuestion.3dm (1.0 MB) (8.2 KB)

Hi - did you resolve this?