Internal Walls

Is there any way to add internal walls to a room after its been created for example a 6m x 3m room with a wall in middle dividing room into 2 with arch between them

https://1drv.ms/u/s!AgukzrwfS7NVgwo9Dva1lB_rINvy?e=yVhkHr

I did above by going around room twice using spaces to return to wall and finish but seems an awkward way to get internal wall so was wondering if anyone had better way.

Yes. In the base unit section under More.

There is also a way to add another room under Utilities - tools - Useful Wizards - add another room. You will need to have the door or arch selected before it will work.

Thanks Joe thats perfect i had tried the add another room but that just seems to give me a new room altogether the above will work fine for what i need