More than one input to waveform graphic

We have x-axis represent for time and y-axis for amplitude of the signal... How can we give in more than one input to y-axis so we can monitor all signals
(about 4 signals I need) on the same graph?
Thank you

I'm just a begineer myself, but this is how I've accomplished this task in the past.
First of all, I was receiving my data as a 1-D array of waveform data. I wired this data to a 'build array' function inside a 'for loop' where I then spliced it into a 'build waveform' to combine it with a time value from the waveform data. I essentially just rearranged the data to a form that could graph all data simultaneously. The attached vi might help my explanation.
There is probably an easier way.
Attachments:
multigraph.vi ‏21 KB

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