Organization chart web part needs a method to filter out Functional Mailboxes (FMB)
Throughout our organizational hierarchy, there are FMBs assigned to managers which we do not want to display in the Organization chart. Please consider adding methods to filter these out of the view. As it stands, people do not want to use it because it's a bad UI.
Hawley, Christopher commented
These are also known as "Shared Mailboxes"