Hello,
An easy way to tell how to make multi-plot charts and graphs is to hold your mouse over the chart/graph terminal on the block diagram and make sure Context Help (Help >> Show Context Help) is enabled. This screen will tell you how to connect the indicator for a multiple-plot display.
You might want to take a look at my attached screenshots of a working multi-plot chart.
Hope this helps!
Liz F
National Instruments
