To configure your server instances to use the ATG-Endeca integration, select [3] ATG-Endeca Integration and [4] ATG Commerce in the Product Selection menu:
[3] ATG-Endeca Integration :
Includes ATG Platform. Select this option when Endeca is used. Do not
select this if you are using ATG Search
[4] ATG Commerce :
Includes ATG Platform, Content Administration and, optionally, data
warehouse components, Preview, and Merchandising
Note: If you also intend to install Oracle ATG Commerce Reference Store, its installation option includes Oracle ATG Web Commerce, so you can select [3] ATG-Endeca Integration and [5] Oracle ATG Commerce Reference Store instead.