Re: I'm confused
To answer your original question: If you want multiple outputs that are each capable of supplying varying current to a load while keeping the voltage of each output constant, you have to have a separate regulator for each output.
I think you don't understand the concept of GND. GND is not (usually) connected to earth. It is simply the common node (connection) in the circuit to which everything else is referenced. In your schematic, all your "outputs" are shorted together (to "-"), the resistors R2-R6 are all in parallel (which means they act just like a single resistor), and there is no GND. In a working circuit, "-" will normally be GND, although "+" could be the GND node, in which case you would have a negative voltage on "-", relative to GND.
I know this is confusing. Maybe one of the other guys can explain it better. :?
EDIT:
If you use the "Add an Attachment" window instead of posting images, they won't waste space by being repeated in a quote, which I did originally.