Yesterday I got some great help clarifying my spreadsheet need, and the
formula below was generated (which works, and does exactly what it needs to
do):

=SUMPRODUCT(('New Rule Clients'!Y4:Y3500="Yes")*('New Rule
Clients'!Z4:Z3500=""))

I'm wondering however, if it is possible to add a third level of formula and
or logic to the above, based upon the following requirement:

In Column A I list clients by "Last Name". The above formula offers me a
nice "total numerical count" of those individuals who have not had their
final interviews with our program. If I could also get the actual names which
associate with those "numeric values" I would have even more precision. Is
there a way to "link" logic with Column A (where the actual names are
listed), to generate a formula outcome which would provide me the actual
names of clients who still need their final interviews (above and beyond just
identifying that a specific number haven't yet been interviewed?).

Thank You in advance for you Input and Help!

Dan