Salesforce Scheduler: Review Service Appointment screen shows 2-column layout despite custom page layout

Cause

The Review Service Appointment screen's 2-column field layout is intentionally hard-coded in the built-in flow screen component. Page layouts control which fields and sections are displayed but do not control the grid arrangement or fields-per-row configuration. This is by design in the standard Salesforce Scheduler component.

Resolution

To achieve a 1-field-per-row layout, build a custom flow screen component that implements the `lightning__FlowScreen` interface and substitute it into the flow's Review step.

1. Create a custom Lightning Web Component implementing `lightning__FlowScreen`
2. Design the component with your preferred field layout (e.g. 1-field-per-row)
3. Replace the standard Review Service Appointment screen in your Scheduler flow
4. Configure the custom component to display ServiceAppointment fields as needed

Refer to the official Salesforce documentation for detailed implementation steps and considerations when building custom review screens.

References:
– Modify the Review Service Appointment Screen (https://help.salesforce.com/s/articleView?id=platform.ls_modify_the_review_service_appointment_screen.htm&type=5)
– Considerations for Creating a Custom Review Service Appointment Screen (https://help.salesforce.com/s/articleView?id=platform.ls_considerations_for_creating_a_custom_review_service_appointment_screen.htm&type=5)
– UnofficialSF: "Build Your Own Appointment Review Screen" (https://unofficialsf.com/build-your-own-appointment-review-screen/)