You can associate items in a list page with a related card page so that when a user double-clicks the list item, the card page for that item is opened. The CardFormID property is used to associate an item in a list with a specific card page. For example, you can use it to associate a name in a customer list the related customer card.
To associate a card page with a list page
With the list page open in Page Designer and with the first available empty row in Page Designer selected, on the View menu, click Properties.
The Properties window opens.
Locate the CardFormID property, and then click the AssistButton in the value field.
The Page List window opens.
Select a page from the list, and then click OK.