Found out that you can merge wall, column, and beam under complex profiles.
I wish there is a merging for slab.
For example, if there is a drop of 50mm in the slab, I would cut the area out and replace it with a slab 50mm less thicker than the previous one.
When I change the floor area, I dont have to change both area. Time is important.
Also when I copy the floor, sometimes I miss it.
Any one any clue.