Allan,
I think that you need to use dynamic loading technique, which was described since LV5.
Take a look at example at ..\labviewX\examples\viserver\dynload.llb
Basically you need to get vi's list from separate directory where you'll put your "calibration" vi's, then wire this list to one of the selection box or list control, select desired file and load it dynamically using open vi reference, as described in mentioned example.
Hope this will give you an idea.
Sergey