The Ui mixer has a function that allows adjusting a fader with higher precession.  To activate this feature, click or tap and hold a fader for 1-2 seconds and a blue halo will appear around it.  Now move the fader up and down for fine-tuning.  This feature is also referred to as the “nudge function".

You can turn on this feature in the LOCAL tab of the SETTINGS menu.  It is called HOLD FADER FOR FINE TUNING.

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