Thanks, kjgullerud
I am happy to assign LLR manually but the point is if I have only a typical floor in model space I can only assign one LLR value per column for all the levels while I need it to be assigned to be different for each floor. If on the other hand I will model say 10 non typical floors just for the sake of assigning the right LLR per floor it would contradict with the approach of the software to simplify the modelling process and will become a nightmare if I wish to change something later (then I'll have to repeat the change 10 times).
Please advise.