Why Can't I Choose Customer's Contact After E-Connection?

Before you can choose customer to collaborate over styles or present styles to him or her, you need to add a contact in Garment Customers>Address Book>Setting Center to build the connection.

Then, go to My Customers>Design Center to choose the same customer's contact for style collaboration.

Without adding the contact in My Customers, you would only see your customer name (normally company name) but with no contact.