Hello, I want to define the basement curtain in idestatic. But there are a couple of points I'm stuck on. 1- While defining the floors with the Floor General Settings in the program (2nd Basement, 1st Basement Floor etc.), there is no problem in the system without a subfloor, but when there is a subfloor, we will define it as a separate floor. Otherwise, we will add my basement elevation to the 2nd basement elevation. In addition, we can fill in the sub-basement and define flooring on it in the program. 2- Since the land where the building is located is sloping, one side will rest on the soil and the ground corresponding to the ground will be solved with a curtain. How can we define that on the upper floors these curtains are not basement but floor curtains, but are exposed to soil pressure. Thanks in advance, Erman SAYGIN İnş. ENG.