How to respond from group email address?

I just redirected my band's email account to a Zoho account. I also created a generic address/group "contact@the...." and added 3 membersto the group, including myself. I sent a test email to contact@the...., and when I went to reply, I didn't have the option to reply from "Contact@the...." but only option was my personal email. I'd like to show response from Contact@the...