Well by default the east and west Nav Pad buttons scroll through the scenes. This cannot be disabled.
There is a rather roundabout way that you could get the north and south buttons to scroll through the scenes, but it is a little involved, will only work in Hosted mode, and it would probably be more reliable to just get used to the left and right motion for scene changing (instead of up and down).
I've attached a screenshot of how you should set things up in the SoftStep Editor. This screenshot was taken on a Mac, so the setup might be just a little different for you. The only difference for Windows is that anywhere it says "IAC Driver Bus 1" you should choose whatever your third-party MIDI router is — we tend to use MIDI Yoke, so choose "MIDI Yoke: (x)" (it doesn't matter which one, just remain consistent and don't use the one you're using for sending MIDI to other apps).
What is going on in this screenshot is there are two modlines: one for Nav N and one for Nav S. Each of these modlines are outputting the value 127 on a different CC number whenever the key is pressed (you can change the CC numbers to whatever you like, again, just remain consistent). The CC value is sent out as MIDI over the IAC Driver Bus (or MIDI Yoke), then it comes back in to the editor using the MIDI input options in the Settings window. This MIDI is then used in the Preset Modulation window to increment or decrement the selected scene.
- method for using the up/down keys on the Nav Pad to change scenes.
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