Can I customize Hot Cues, Sampler, and other features?

Yes.

■For rekordbox dj
You can use Pad Editor to change Pad mode settings. For details, refer to Pad Editor Operation Guide.

Find the Pad Editor Operation Guide [here].

■For Serato DJ Pro
You can assign functions to the pads in User mode using the Serato DJ Pro MIDI assignment feature.
For details, see [Using User mode] in the Operating Instructions.
You can read the Operating Instructions [here].