Shipping Zones isn't the same as uAfrica Shipping.
Shipping Zones is functionality that enables you to charge shipping based at postcode level on either bidorbuy or Shopify.
uAfrica shipping allows you to fulfil orders using multiple couriers via the uAfrica platform.
We have a tutorial on how to set up Shipping Zones in uAfrica.
To fulfil orders in uAfrica using our Shipping solution, you'll go to your *Orders* and then you'll be able to fulfil from there. Once you click fulfil, you'll be able to see the quotes from the various couriers.