Meal choices are defined on the Bidder Registration page from the main Auction dashboard. Click on Website then Bidder Registration and go to the "Registration Options" panel to configure this option.
Enter a comma separated list of meal choices to present to bidders when they are registering for example:
Require meal choice
If meal choices are defined, require that a meal choice is entered for each guest.
Reviewing Meal Choices
You can see an individual bidder's meal choice on their Bidder Details page.
You can also see a report for all bidders by clicking on Reports -> Bidders -> Meal Choices; or, you can add the "Meal choice" column to any Bidder based report (see Choosing Columns for details).