You can access advanced controls over any Kontakt instrument by clicking on the Wrench icon in the top-left corner of the screen.
In the resulting window, you can:
- Turn on the Mapping Editor panel to change the position, volume, or even remove whole samples.
- Modify an individual sample in the Wave Editor.
- Add or edit effects in the SendEffects tab (such as reverbs, EQs, compressors, etc.), all within Kontakt.
- Modify ADSR and other controls in the Modulation area.
Experiment around a bit!