This info is available on page 23 of the User Manual.
Set the PRE/POST switch to the down position to use Mobius in a pre/post type setup.
Connect INPUT 2 to your other pedal(s) output and OUTPUT 2 to the input of your amplifier or other pedal(s). Then you can select whether the modulation effect occurs before or after the other pedal(s). This is selectable per preset.
When connected as above, the PRE/POST setting in the preset menu does the following:
Posted in: Mobius Usage