The New Schedule board capability is present for only Field service (https://docs.microsoft.com/en-us/dynamics365/field-service/preview-schedule-board) and not yet available for the users of URS with Customer service experience.

However the deprecations of calendar settings (Schedule engine = URS) was already part of URS upgrade.

If implemented the appointment scheduling will add lots of value for Customer service users as well.

Hope this will be considered . Cheers !!