SharePoint 2010: Create Master / Detail Display Form for SharePoint Lists

Problem: View on one screen Master / Detail ItemsOverview:There are two SharePoint lists connected each other. Business Area list is a master lookup list, whereas Business Entities is a Detail List that contains a Lookup column from Master list.

Solution: Edit the display form of the parent list and add the related list.

Go to Master List.

Select Default Display Form under Customize List section on the Ribbon:

Select Insert Related List option under Relationship section on Ribbon

Related Items in Business Entity Web Part is added:

Click Stop Editing

Select any item in Business Area list, the related Items in Business Entity are displayed