I played with this and found the same thing, that drop down is empty. If you open a patient's chart those entries are saved with the label "patient message". The only other place that I found "patient message" was in the printer drop down on the tool bar at the bottom of the patient list box ( next to the binoculars). When I select "print patient messages" nothing happens. I think this is a bug in this version (5.0.29) but ( embarrassed to say) do not know how to report a bug.