Telling Labview which loop to execute first

[professorX]

I have two For Loops in Labview and I'm not sure how to tell it which loop to execute first.

In C language you would just have:
A For Loop {
...
}

B For Loop {
...
}

The first loop that it would execute would be the A Loop because its in the top.

So do I need to arrange the blocks some way so it does not execute both of the loops at the same time?