Go to Setup>>Settings.

 Under the shipping title, click on Manage Ports.

The Manage Ports window will open, from this window you can see the ports your company has. By going to the actions column you will be able to edit or delete a given port. To add a port, click on Add a new port. 

Enter the information of the new port in the Add/Edit Port window. Remember the ship days before the truck date field is very important since the system will calculate the grower ship date for the purchase orders with the number of days prior to the truck date as specified for each port (you can also specify this information for each vendor in the Shipping Schedule by Vendor). After you have completed the information, click on Save.

 In the case of multilocation companies, the system allows to set up the Ship Days Before the Truck date on a per location basis. Please read Manage Ports in Multilocation Companies for further information.