I meant to comment on this last night when I approved the topic but I was too tired to manage anything.
At any rate, I don't think this is a very good idea as I don't see the purpose or benefit in it.
Primarily, staff have their personal Skype accounts that they add people on and want to be on. I don't see why staff would be on a shared account and not their personal account at any time, or why it is important for HNZ to have a "Staff Skype account". There are countless ways to contact staff, and Skype is never ever a requirement.
I wouldn't be willing to take part in this; and I think if you have staff unwilling to take part in a shared account, then it wouldn't work anyway.