Our current setup has forwarding working like this.
2 users have their own voicemail on each of their lines.
User A manually callforwards their line to user B. Someone calls user A and it forwards to user B. If user B does not answer, user A's voicemail picks up, not user B's
The customer would like this to change. Instead of user A's voicemail picking up, they want user B's voicemail to answer. I researched this over a year ago, but I have forgotten what I found. IIRC, this was a global change that affected everyone.
I hope I've explained this well enough. Any help would be appreciated. Thanks