How do I add a single value to unique values symbology

[KeithAddison1]

I'm at the unique values symbology and want to add one single value to the symbology scheme.  Other than fire up ArcMap, I can't figure out how to do this.  Pro's Unique values window is a bit baffling.

[DominicRoberge2]

Hi Keith

can you click the "+" sign

then the list of values will be generated and you can select what ever you want.

[jcarlson]

It also allows you to add values not present in the layer, in case you're setting up a layer for future additions. Very handy!