What I do is set up these 4 buttons on a registration.
1- Mic OFF (so you can talk to someone)
2- Mic ON but with NO reverb on (so you can talk to your audience)
3- Mic ON with Reverb on your vocals
4- Mic ON with Reverb on your vocals and BACKUP singer/singers to harmonize with you.
Then I have set up a dozen or so registrations with different amounts of REVERB on the mic and/or Different backup sings MEN/WOMEN and 1,2 or more persons.
It works perfect.
Regards
Drake