Navigate to Data⇒Organisation⇒Supplier
Locate the supplier you wish to amend, using the Search function if required. Double click or click the edit icon to open the supplier record.
Click on the Contact tab and then Click on the New Contact button
Fill out your contact’s details.
If you want the contact to receive purchase orders via email, use the drop down box and select Yes, then click the Update button.
Click the Clear button and repeat the above process for any additional contacts.
Then click the Save button.