TV: S90D 65"
Soundbar: S800D

Settings>Sound>Expert Settings>Woofer & Equalizer

There is no way to move right to the next frequency grouping. Right arrow on controller goes to "RESET".

See attached picture.  No button on the TV or Soundbar controller or the old Samsung "universal" controller will move the frequency choice right and left.

This is a software bug.  Please report this as a bug.