Native Instruments MASCHINE MK3 Groove Production Studio (Black) - Manual (Page 913)

The Zone page (here for an empty Sound).
Opening the ZONE Page on Your Controller
► In Sampling mode, press Button 4 to access the ZONE page.
The ZONE page on the controller.
17.5.2 Zone Page Overview
The Zone page provides following elements:
Sampling and Sample Mapping
Mapping Samples to Zones
MASCHINE - Manual - 913