Is it possible to run sub vi and main vi at same time from startup?

Is it possible to run both my main vi and my two sub vi`s from startup, all of them continuously? I have to sub vi`s that are supposed to take in measurements from two different instruments continuously. I manage to make a program where I can open up and close the sub vi`s, but when my sub vi`s are closed, nothing is happening in them...and they start to run again when I open them...and I have to close them if my main VI is supposed to run. So the data in the chart is only from the periodes when the sub vi has been open.
Thanks in advance for your help!

I will send my labview programs. "Hovedprogram" is my main vi, "front" and "front 2" is my sub vi`s. I am also using global variables. I have already searched the discussion forum trying to find an answer to my problem, but I haven`t quite managed yet...
My sub vi`s are not connected to any instrument now, but I have inserted a sinewave-generator and a chart in "front"(my sub vi) so I am able to see that the sub vi actually stop running when i close the window.
Attachments:
front2.vi ‏17 KB
Hovedprogram.vi ‏42 KB
front.vi ‏69 KB

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