*first create the search criteria in SETTINGS -> BOOKING PAGE ->MULTIPLE PROPERTIES->SEARCH CRITERIA
*then go to SETTINGS -> BOOKING PAGE ->MULTIPLE PROPERTIES->PROPERTY SETTINGS and assign the applicable criteria to each property
*then Once you have set an assigned your search criteria you can go to SETTINGS-> BOOKING PAGE-> BOOKING WIDGETS, set . Set PROPERTY = ALL and design your widget, ensuring that you change SEARCH LABEL to show the search criteria in your booking widget.
NOTE: If you make changes to your booking widget you need to copy the code 'Get Code' to your website again.