I am facing a specific issue with this particular exercise. When I select the Stage form the Case type, we should be seeing two tabes under the Contextual properties - General & Validation. However, I only see the General tab and not Validation.
I am facing the same issue. From the instructions for Exercise: Validating User Entries on Forms, the instructions say to "In the contextual properties panel for the Pre-Arrival Setup stage, click the Validation tab to display the validation field." However, there is no Validation Tab, only a General Tab.