You can configure the Progress bar in the Form builder for the specific dropdown fields of any Object form. You can enable the progress bar view for the dropdown type fields: Picklist, State, Status.
You can enable the Progress bar from the Field Configuration, by scrolling down in the Field configuration, you will find the Show as Progress Bar Enable the option to display to the portal users in the customer portal.
You can set the sequence of the available options (Field values) for the selected dropdown Field. You can shuffle the options to change the sequence by dragging it up-down.
The 2-design layouts are provided. You can select any design layout to display the progress bar in the customer portal. You can also make the progress bar field as Required or Read-Only as per your requirement.
Note: The progress bar status can reflect the “Advance Field Management” settings to display the Field options to allow the portal users to select in the customer portal.