Creating a Wallsection
Building facades are made up from a grid of wall sections. A single wallsection might contain a window or door, or might just be a section of bare wall. You can read more about these here.
To create a new wallsection you can either click on the top Unity menu bar and select Tools > BuildR Cities > Create New Wallsection or you can right click in the project window and click Create > BuildR Cities > Create New Wall Section.
Creating the wallsection from the top menu will place the new wallsection into the default wallsection folder (BuildRCities/Assets/Wallsections).
Creating the wallsection from the project context menu will attempt to read the currently selected project folder and place the new wallsection asset inside that folder.