I have found two effect modules on the mixer where not all the parameters are adjustable by the encoders with display on the top left of the unit.
It was in the "chorus" and "flanger" effect modules.
available: modulation rate (encoder 2), depth (encoder 3) and feedback (encoder 5)
missing: width, shape, offset and LFO polarity.
available: modulation rate (encoder 2), feedback (encoder 5)
missing: range, width, offset
Could this please be added in the future?