ArcGIS Pro - Contingent Values

Video #133
This video shows you how to create and use Contingent Values.
Setting up such values needs domains so that's the first thing that must be done - create domains and assign them to fields.
At least 2 domains are needed and although I only use 2 in my demonstration, you can use a lot more (subtypes are supported too).

As well as creating and demonstrating this feature of ArcGIS Pro, I also show you how to "retire" contingent values. This stops them being an option in the drop down but does not delete any previously entered data.

Note that whilst domains are honoured when you publish to ArcGIS OnLine, contingent values are not.