To set up Ring Groups in 8x8 Admin Console, log in, then go to Create Ring Group option. Find the full list of steps here.
To change a Ring Group's Inbound Caller ID in Admin Console, go to Ring Groups and select an option from the Ring Group Caller ID drop-down. Learn more.
To edit your Ring Group voicemail password in Admin Console go to Voicemail Settings and click Reset Password. Learn more here.