We use ProStar 816 for our office phones (4). Through our phone company, we have our voicemail boxes set up where we have to dial a local number to get into the system to check our voicemail. My question: When someone calls and wants to leave a message with someone not here, how do I get them to do that?? Is there a way to put them on hold and then call that voicemail number and then connect them to it to leave a voicemail for someone out of the office? I've tried the conference call button, but to no avail. Doesn't there have to be a way to do this?? Please advise. Thank you.