The menu options may look like the following:

Select product you wish to configure by entering the corresponding item number.

  (Searching for products... done.)

  Choose one of the following options: (* = Currently selected )

  [1]  ATG Platform :
        Includes, optionally, data warehouse components
  [2]  ATG Site Administration :
        Includes ATG Platform and Content Administration
  [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]  Oracle ATG Web Commerce :
        Includes the ATG Platform and ATG Content Administration. Optional:
        data warehouse components, Preview, and Oracle ATG Web Commerce
        Merchandising
  [5]  ATG Content Administration :
        Includes ATG Platform.  Optional: Preview
  [6]  ATG REST :
        RESTful Web Services
  [7]  Oracle ATG Commerce Reference Store :
        Includes the ATG platform, ATG-Endeca Integration, ATG Content
        Administration, Site Administration, Oracle ATG Web Commerce, and
        Oracle ATG Web Commerce Merchandising. Optional: data warehouse
        components and Preview
  [D]  Done

Select one or more > 7
-------PRODUCT SELECTION--------------------------------------------------------
enter [h]elp, [m]ain menu, [q]uit to exit

In this case, selecting option [7] Oracle ATG Commerce Reference Store allows you to select Mobile Commerce as an add-on later in the setup process.