Navigate Here: Utilities > Dropdown List Management > Vendor Types; and click the Add icon 
You can add a vendor type on the Add New Vendor Type page.
To add a new vendor type, fill in the following fields:
The required fields are noted with an asterisk (*).
Vendor Type ID*: The ID of the vendor type and it must be unique.
Vendor Type Name*: The name of the vendor type and it must be unique.
Description: Descriptions of the vendor type.
Click the Save button to add the new vendor type. The system will then go to the Browse Vendor Types page.
Click the Save & Add button to save the new vendor type and add another vendor type.
Click the Cancel button to abort the inputs and return to the Browse Vendor Types page.