Hi Jonnymac,
You can partition your roof using 'Edit' tool or 'Partition' tool.
Procedure to use 'Partition' tool:
1) Select a roof & go to plan view.
2) Click 'Draw partition' button from the toolbar & create a partition.
Procedure to use 'Edit space' tool:
1) Select a roof & click 'Move down one level' button from the toolbar.
2) Select 'Edit' from 'display mode' drop-down. (This will pop-up 'Edit space' form.)
3) Using 'Edit space' you can partition your room.
It will be difficult for me to explain you the usage of 'Edit form' in detail . The better idea would be to go for a "IES Training" program.
http://www.iesve.eu/Training-Calendar/.
I hope this has been of some help.
