Depends on the Reverb unit.
I've used some where I send the unit a message to do many things .. change the effect altogether (like a program change message) or adjust the input, output or 'mix' of the effect itself (usually via a CC change message to the unit or more rarely SysEx).

For a crude 'getRdone' method, copy the sections to separate tracks and assign different effects/mix.
Example:
Have one track for the verse with effect setting A, and use another track for the chorus parts with different effects/settings. Sometimes this can actually be quicker and just as effective in the long run. Just chop it up to separate tracks and mute the original track.

Make your sound your own!
.. I do not work here, but the benefits are still awesome