General VM mailbox

[oneno]

Yealink question.
Hey everyone, newbie here. I took on the roll of managing our phone systems as our phone rep is pretty much non existent and I have a "general" IT background.
I need to setup a general phone in extension for attendance phone ins. Doesn't need to have a physical handset but just an extension that employees can leave a voicemail on that can be accessed by the people who need to retrieve the messages. We have a Yeastar S20 PBX firmware vs. 30.14.0.23 using a combination of T40G and T42S handsets. Not to sure where to start. Any help would be appreciated.

oneno