Ken,
If you go to ADAudit Plus - Reports - User Logon Reports -
User's Last Logon, there you will see an option for "Before
7/30/60/90 days" for logon, which is essentially what ADManager
Plus is looking at. The only difference is that the ADAudit Plus
report does not include users that have never logged in, where this is
an option in ADManager Plus. ADManager Plus by default lists the users
in the report that have never logged in.
I hope this helps with the report option.
Derek