The DS has Directory Routing Boxes under the Voice Mail tab.
You da'man! Took a while but our DS2000/IntraMail system is now configured for Directory by Name. Apparently NEC added this function back in 3.20.x.
Configured Master Mailbox 4 as Directory Mailbox (8005)
Set up to search minimum of first 3 characters of the last name.
Noted that the options for Last, First or First, Last under 0201 have no effect, always follows the "First, Last" format
Set up next mailbox so that selecting "0" from Directory by Name routes to MB 1 which routes to Direction Table 2 with and internal ring group.
Thanks again brokeda!