Hi,
So I am joining a table of inspections to a feature layer. I join the inspections to the features and select "Keep All Target Features", so I can see both the features that have been inspected as well as the ones not inspected. I use the join field to see where there are NULL values....those are the ones that have NOT been inspected. Here is an example:

My problem is I need to symbolize based on the FACILITYID field. So I need one symbol for all the NULL values, and another symbol for all the 'other' (or NOT NULL) value.
How do I do this? There does not seem to be an obvious way to do this. When I select to symbolize by Unique Values and select the FACILITYID field, it just starts trying to add all the WCV-### values into the window. I only need NULL and NOT NULL, not each individual value.
Hopefully that makes sense.
Thanks!