// loading the field
add_action('acf/load_field/name=select_field_name', 'load_select_field_name_choices');
function load_select_field_name_choices($field) {
$choices = array();
if (have_rows('repeater_field_name', 'options')) {
while (have_rows('repeater_field_name', 'options')) {
the_row();
$title = get_sub_field('services_title');
$choices[$title] = $title;
} // end while have rows
} // end if get field
} // end function
// displaying the values
$selections = get_field('select_field_name');
// this is assuming that the select field returns an array of selected values
if (!empty($selections)) {
if (have_rows('repeater_field_name', 'options')) {
while (have_rows('repeater_field_name', 'options')) {
the_row();
$title = get_sub_field('services_title');
if (in_array($title, $selections)) {
// get other sub fields from the repeater and display here
} // end if selection is selected
} // end while have rows
} // end if get field
} // end if !empty
