Looking in an area milling operation, under Cutting Parameters; Multiple Passes tab, there is no check box for "multi-depth cut." The user has the field to enter the part stock offset, but there is no check box to enable the multiple passes and give those parameters.
Solution
This is tied to the stepover option selected in the drive method. If you have stepover applied 'on part' you don't get the multiple passes option in Cutting Parameters. You have to have stepover applied 'on plane' to have multiple passes. This is intended, as the software can't apply a stepover 'on part' if the passes are up in the air above the part.
Notes and References
Hardware/Software Configuration
Platform: all
OS: n/a
OS Version: n/a
Product: NX
Application: CAM
Version: V10.0.2
Function: SURFACE_CONTOUR
Ref: 001-7739387