I have added an example of front end load more functionality for a repeater on the front end of a site. It’s just the basics, but it’s a working example including a field group to test it with. The included field group will only work with ACF 5, but the rest of it should work with ACF4 as well.https://github.com/Hube2/acf-dynamic-ajax-select-example/tree/master/repeater-ajax-load-more
