Hi @johnshuffles-com-au !
It’s only an idea: you can use Select field for that: https://www.advancedcustomfields.com/resources/select/
After creating your field, transfert it to PHP with the ACF tool just there (yoursite.com/wp-admin/edit.php?post_type=acf-field-group&page=acf-tools), you’ll be able to use the “new WP_Query” for get your publications by author and fill up the select box.
