You can create elements on the existing lines in a model. To do this, open the Create elements on Lines function in the Edit menu. You do not have to select the lines beforehand.
Selected Lines Nos.
You can enter the lines directly in the text box or select them in the work window using the
button.
Thickness
Enter the actual thickness of the element in this text box.
Material
In the list of already created materials, you can select a material, edit it, or define a new one.