...
The other parameters speak for themselves.
Note (work-around)
When creating a new soil profile, the first row can not be changed.and is a kind of a place holder to show the top and bottomlevel of the surface line
Use the green Plus-button to add a soil layer and fill for the second row in exactly the Top Level of the profile with a soil type name (eg Silty clay, if exists).
The first line disappears when the toplevel of the soillayer lies above the surface line.