Object like a portal but for primary table
I want a clickable list of customers in a vertical object down the left side of a layout. then with the detailed fields that can be edited for a particular customer to the right. When the user double clicks a customer in the list on the left, that customer record is displayed in the edit fields than can now be updated.
I started with a portal but it seems to only be able to display records from a related table, not the primary table of the layout. How do I go about this?