How should I cite a specific section of the LabVIEW online documentation?
It's generally best to provide the location of the cited material in such a way that, should a reader need to find it, they can do so without searching extensively. The pages you are citing are in two different locations (the first is a tutorial on the site and the second is essentially a section from the 2012 version of a manual) on the LabVIEW site so it likely makes the most sense to cite them separately from each other. There's always the potential issue of resources changing location and links breaking, so include other identifying details where possible, like page names and edition dates.