1.Tambahkan script di file vegas.js.php yang berada di folder template/default/assets/js

<?php
/**
 * @Created by          : Waris Agung Widodo (ido.alit@gmail.com)
 * @Date                : 2019-01-29 23:33
 * @File name           : vegas.js.php
 */

?>

<script>
  $('.c-header, .vegas-slide').vegas({
        delay: <?= $sysconf['template']['classic_slide_delay']; ?>,
        timer: false,
        transition: '<?= $sysconf['template']['classic_slide_transition']; ?>',
        animation: '<?= $sysconf['template']['classic_slide_animation']; ?>',
        slides: [
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide1.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide2.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide3.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide4.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide5.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide6.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide7.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide8.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide9.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide10.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide11.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide12.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide13.jpg" },
            { src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide14.jpg" }
        ]
    });
</script>

jadi yang ditambah adalah kode dibawah ini, sesuaikan dengan nama file gambarnya, misalnya slide9.jpg

{ src: "<?php echo CURRENT_TEMPLATE_DIR; ?>assets/images/slide9.jpg" },

2. Tambahkan file file gambar dengan format .jpg dengan penamaan slide1.jpg, slide2.jpg dan seterusnya, upload di folder template/default/assets/images/

Selesai