[CentOS] X11partioning

Hi All,

I am searching for a way in X11 to "partition" or "divide" the screen.
For example the physical size of the screen may be 1920x1080
but what if I want 3 sections like

      A
B      C

where A is treated as a screen or division by itself,
then B and C the same way. Some subset of the screen.
So the application running in space A does not affect the
application B or C and vice versa.

Does something like that exist of X11? All this is on the same
physical screen. Just dividing it up.

Thanks

Jerry