Set the Bullhorn Field used for the Location Taxonomy using the Location Taxonomy Term setting in the Job tab

You can change if you want to use the City, State as a combo this can be done this filter
add_filter('matador_import_location_taxonomy_field', function() { return 'job_general_location';});You can create separate taxonomies for location data by adding additional taxonomies for them and Matador will auto-fill them when importing jobs
add_filter('matador_job_taxonomies', function($taxonomies) {
// with no options
$taxonomies['country'] = array(); // add to the array to set the label etc.
// with options
$taxonomies['city'] = array(
'single' => _x( 'city', 'Job Category Singular Name.', 'matador-jobs' ),
'plural' => _x( 'cities', 'Job Category Plural Name.', 'matador-jobs' ),
'args' => array(
'public' => true,
'show_ui' => true,
'show_in_menu' => true,
'show_in_nav_menus' => true,
'show_tagcloud' => true,
'show_in_quick_edit' => true,
'show_admin_column' => true,
'hierarchical' => false,
),);
return $taxonomies;});