How to show two fields in a unique symbol

[SanchezNuñez]

Good afternoon,

When I show the Commission district layer symbology  with unique value "Commission Dsitrict Number"  I would like to  show in each value the Commission District Number and the Commissioner Name.

How Do I add two fields for each symbol.

[AlfredBaldenweck]

Pretty easy. 

Hit "Add Field" and select the one you want

[CalvinHarmin]

In my case I found that publishing a feature service with 'two fields' option is not supported (e.g. for an enterprise geodatabase feature class published as feature service with editing enabled); in that case, one needs to use the expression option instead. This expression will then populate all of the symbology permutations available from the current data and can be manipulated (grouping, change labels, etc.) in the same way as using the 'two fields' option.