The Additional Criteria button, which displays on each of the searches, lets you select amenities for your search. First specify the basic criteria you want to search on, such as property type, price, status, etc. Then you can click the Additional Criteria button if you want to specify amenities.
NOTE: You must select only one property type in order to specify amenities, since amenities are different for each property type. If you have selected more than one property type, the Additional Criteria button is not available.
See also