Akai MPC User Manual page 202

Assign Slice assigns a single slice to a selected pad.
o
Click Pad and select the desired pad. If Crop Samples is
activated, each slice results in a new sample. Click
Program to specify a Program to which you want to add
the assigned slice. The sample will be named with pp
attached to its original name.
Track with events after using the Sliced Samples > Create Events function.
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