how to change or assign delay, chorus,reverb , etc to right voice?

In preset sounds, it is impossible to change the effects.... You can change effects only in Programs... But if you want you can to change the Master effect that has difference when you change him....

PRESS MENU/DSP/select any effect if you want/EDIT/select algorithm of effect (for example REVERB)... Now....When you press REVERB in this page exist a certain settings:
From RIGHT_LEVEL you can to give level in effect
From RIGHT_REVERB wnen you press it opens the program (algorithms) of effect.

Select any preset alforithm or from the next page, select USER/EDIT to make a your setting if you like and when you finish press SAVE for save your User algorithm and when is all ready, press EXIT and press SAVE button/CUSTOM SETTING to save all your settings...