Editing spaces is best done using the Vector editor.
The overall editing capabilities are similar to editing other polygonal shapes.
Simply select the space with a tap, and then click the Vector edit button and make changes as required.
Space editing logic
Editing the exterior of the building and spaces has a number of complexities. In order to best deal wit these potential pitfalls we've developed the following logic to govern the different editing requirements.
Building shell editing
To change the overall shape of the building exterior you need to edit the building shell. To do this you need to double-tap a space (the first tap selects the space, the second selects the building)
Even if all you want to do is "push out" a single space you need to edit the building exterior and not the individual space. If you do extend a space outside of the building edge it will be trimmed back.
Changing the building exterior will automatically reduce or enlarge the spaces adjacent to the edited face.
Equally if you use facade editing to change the contour of a face all spaces across all levels will be updated as required.
Note: if you want to edit the building exterior across a number of levels, select the levels in the 3d window. Selecting the building with a double-tap in the 2d window will only select the working level.
Editing spaces will produce two different results depending on the approach you take.
If you enlarge a space then all adjacent space(s) will be trimmed and updated accordingly. If the edit completely overlaps a space the overlapped space will be deleted.
If you reduce the size of a space, the void will be filled with a new space. This is a good approach when you need to insert a space in to the plan.