This section is used to specify the list of countries that Facebook can use to find a match to the selected Custom Audience when creating a Lookalike Audience. It is displayed when Facebook action is set to Lookalike Audience. It contains the following:
•Countries: a list of possible countries from which to source lookalike audience members is supplied. It is populated with an alphabetical list of country names when Sync Custom Audiences is clicked.
•Add: clicking this button, which is enabled on selection of one or more Countries, adds the selection to the Selected countries list.
•Remove: clicking this button, which is enabled on selection of one or more Selected countries, removes the selection from the Selected countries list.
•Selected countries: the list of selected countries from which to source lookalike audience members.