Most VST plugins do not report their presets to your DAW
As such, you cannot select presets from your DAW
NKS glues together your VST plugin presets with additional information
You need .nksf files (for instruments) or .nksfx files (for effects), shortly named NKS files
Each NKS file contains the preset data and meta-information like banks, authors, controller mappings etc
Maschine and Komplete Kontrol loads these files and can present their information in the software or on your hardware
Some plugin vendors also deliver NKS files for their plugins
NKS files will NOT be auto-generated by Maschine, Komplete Kontrol or your plugins
You can either generate NKS manually or automatically. Note that the manual process requires lots of time, because you have to select each and every preset in your plugin and save an NKS file for it.
Open Maschine or Komplete Kontrol
Load the plugin
Select the preset inside the plugin you wish to save
In Komplete Kontrol: Select File->Save As
In Maschine: Select the Option "Save as" in the same menu where you selected your plugin
This saves a single NKS file, which then appears in the User Library.
There's an effort by volunteers creating NKS files, called the NKS user library. You can find it in the Native Instruments Forum. Note that you need to re-scan your user library in order for them to appear.
That's where PresetMagician comes into play - it automatically generates NKS files for you, including audio previews. To quickly get results, please read the Getting Started guide.