Hello.

I am now trying to apply HAMT in my project. In that, there is a thing I cannot understand.

When checking Engineering Reference, it says

"“Surfaces” are made of a number of layers of potentially any combination of materials. Each surface is split into its constituent materials and is then split up further into cells through its depth."

Here, how does the program split a surface into cells?

Automatically, or are there any ways to define coordinates of cells by users?

In addition, my target has an earth floor.

In this case, what kind of the outside boundary of RH is used if I apply HAMT to the floor; always 0 ? (I understand this method is not suitable for vertical water movement underground which is driven by gravity. But I want to know this.)

I would appreciate for any kinds of information from you...