Details on the Building Parts Dialog
Information on the Building parts dialog.
Create building parts and assign the corresponding storeys to them.
You are here:
Table
Click on 
Add new building section or click in a free row of the table to create a new building section.
Table context menu
A right-click in the table takes you to the following context menu, where you can insert and delete building parts:
Name
The name of the building part can be changed.
Levels
The select button opens a list of storeys contained in the project. Select the storeys that belong to the corresponding building part.