By default, newly selected items are appended to the bottom of the list in e.g. Relationship Fields. However, in many use cases, it would be more practical to add new items to the top of the list to highlight the most recent selections. I would like to request a field setting that allows site admins to choose whether new items should be prepended or appended in the values list. From my observations, this change would involve adjustments to two specific areas: Line 3831 in /assets/build/js/acf-input.js: This is where the append function is hardcoded. The function call (prepend/append) should be determined dynamically based on the field setting. Line 73 in /includes/acf-bidirectional-functions.php: For bidirectional support, the two values in the array_merge function would need to be flipped if the field setting specifies prepending. This issue/feature has also been discussed here: https://support.advancedcustomfields.com/forums/topic/relationship-add-selected-to-the-top/ . Incorporating this option in future updates would greatly enhance flexibility for users working with relationship fields and improve workflow efficiency. Thank you for considering this request!