Royal Mail and Parcelforce are set up as zone-based methods in ClickCartPro and EuropaCart.
You can change Royal Mail and Parcelforce zone designations for countries in admin under System > Locations > Countries.
You can change Royal Mail and Parcelforce services offered in admin under Store > Shipping > Zone Based Shipping Products.
You can change Royal Mail and Parcelforce service rates for those services in admin under Store > Shipping > Zone Based Shipping Rates.
To assign products to use Royal Mail and Parcelforce for shipping, in admin, go to Store > Catalog > Products and for each product, set it’s Delivery Method to Zone Based Shipping.
To load zone service and rate info into the software, visit https://kryptronic.com/Software-Downloads and download the data files in the Zone Based Shipping Products & Rates section.