In Power Pages, displaying a field as radio buttons can offer a smoother and faster user experience than a dropdown, especially when there are only two or three options available. This approach lets users make selections without any extra clicks. You can render a dropdown as radio buttons directly in Power Pages without relying on any PCF components.
First, navigate to the basic or multistep form.
Create a new metadata.
Select the type as Attribute, and select the dropdown column.
Select the control style as Option Set as Horizontal Radio Button List. You can also choose the other option, Option Set as Vertical Radio Button List, depending on your requirement.
This will show the dropdown button as a radio button in portal forms.
However, it will not impact how the field is visible in the Model-driven app.
Learn more about configuring metadata in the basic form in the official documentation.