Click on the 
button beside the zone you need to delete.
Click on the Yes button to confirm.
When Zones are deleted, they are actually disabled. If you re-create a Zone with the same name, it will re-enable the deleted one. If you wish to delete a zone to start over, rename the zone to something different before deleting.
To Add/Delete or Update Suburbs (Zone)
If needed, then you can add, remove and change the Suburb(s) assigned to a zone.
Any changes will take approx. 10 mins to become active in system and note any existing consignments with headports or route zones will not update.
1. To add/edit or change the suburb(s), then go to Zone List Directory and select the applicable zone list and then click on the Edit Zones/Suburbs. The selected zone details will display as shown below.
If you have more Zone(s) then select the applicable zone. In the above screenshot, only one zone is there.
2. Now, click on the Suburb tab present on the right side of the screen, as shown above. The suburb list will display as shown below.
If needed, then you can filter the suburb list. To do so, manually enter the details in the filter column and then press the Enter button to filter the list as shown below.
3. On the Suburb list, to add/change or remove the suburb, first select the applicable suburb and then right-click on the selected suburb you want to change, and you will receive 2 options as shown below.
4. If you want to add this suburb to the zone, then click on Add suburb to zone, or if you want to remove click on the Remove suburb from zone, as shown above.
If attempting to remove a suburb from a zone, be aware that if this has been assigned via a map or postcode rule, this won't change.
To Add/Delete/Edit Postcode Rule (Zone)
1. If required, then you can also set a rule for the Postcode. The Postcode rule is used to give a range for the Postcode for the particular zone.
2. To add/edit/delete the postcode rule, on the Edit Zone/suburb page, first select the zone (If you have more zones in the list) and then click on the Rules by Postcode tab as shown below.
3. Now, on the Postcode screen, you can edit/delete and create a new rule.
4. To add a New Rule, click on New Rule button, and a pop-up for Create/Edit a postcode rule will display as shown below.
5. Now, manually set the postcode limit in numeric form and then click on the Create button to add the rule for the selected zone.
For Example: If you want to set the postcode limit for this zone to be between 1000 to 2000, then manually enter the value 1000 - 2000 as shown below.
6. Similarly, if you want to edit any postcode rule, then click on the edit icon button, a pop-up for create/edit a postcode will display. Here, you can update the value and then click on the create button the value will be updated in the database.
7. If you want to delete any Postcode rule, then click on the delete icon. A confirm dialog will display, here click on the Yes button to delete the postcode from the database as shown below.