In Method, you are able to add as many additional contacts as needed to your customers. The contacts created in Method will not be synced to QuickBooks.
Remember, a Contact is different from a Customer. You can view our article What is a Contact for more information.
1. Click ⊕ New on your Contacts App, or click ⊕ New Contact on your Contacts List.
2. This opens the New Contact screen. Select Add New Contact To, and in the dropdown, select an existing Customer, Customer Lead, or Vendor.
3. The fields themselves should be self explanatory. Fill out the information for the new contact.
4. Click Save to save your changes, or Save & New to save the current contact and clear the screen to enter another one.
This contact is now an additional contact for the customer you've assigned the contact to. The contact will appear in your Contacts List and will be listed under Other Contacts when viewing another contact related to the same Customer.