Who do we call to set up Outlook for our staff?

For managed clients this is not really a task. A new starter signs into their machine and Outlook configures itself, along with their shared mailboxes, calendars, and signature. Nobody types a server name.

If you are not set up that way, we will do it, and while we are there the things worth doing properly:

• Shared mailboxes added correctly rather than as a second full account. Done the common wrong way, replies go out from the wrong address and sent items vanish into personal folders where nobody else can see them.
• Calendar permissions that match how you work. Most offices want colleagues to see free and busy but not the details, and the default is often not that.
• Signatures applied centrally so they are consistent and can be changed for everyone at once.
• Phones connected properly using modern authentication, so a lost phone can be cut off without changing anyone's password.

The shared mailbox one causes more day to day annoyance than anything else on this list, and it is a ten minute fix.