So if I understand correctly it is impossible to create two or more cross-sections wit the "Site model section" function in the same drawing. And after creating the first cross-section the command "Site model section" becomes useless since the OK button turns grey and it remains grey even when you erase the previously created cross-section. Is there any other possibility (function) to create more then one cross-section (e.g. every 20 m of the road) in the same drawing without using viewports?