Thank you for your reply ,
I accepted it as solution , as i modified the extension to be near as possible from the top riser so it's goes be more realistic and i don't anymore need another panel at the floor , however indeed i didn't get the solution for my question but i think you maybe be right with your suggestion so you give me a good point with this , if you tried this in revit could you attach it here ,
Thank you again and for this attached tutorial 🙂
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