How to define room in an open floor plan

[cooldood]

I'm back!!!

Been gone forever but looking to design another house,

My first most basic question is how do I define rooms in an open floor plan?  obviously this effects the materials and that is what I need.

[solver]

Look at the various wall types -- their names might give you an idea.

[cooldood]

Thanks Solver 

 

What I am trying to do is define the kitchen, dining and living room but there are no walls seperating them

[LawB10]

Use the room divider tool.

[cooldood]

Room divider tool worked.  I looked at the wall properties and there wasn't any names.

 

Thanks everyone for the help 

[Rookie65]

It wasn't for names, it was for wall type.