Open your ghost admin dashboard and find the code injection area. Now paste the following code what you want to override,

<script>
    // Slider Options
    var slider_post_limit = 3;

    // Single Carousel 
    var carousel_slider_tag = "trending";
    var carousel_slider_title = "Trending Videos";
    var carousel_slider_limit = "all";


    // Post Category One
    var cateogry_one_title = "Appetizers Recipe";
    var cateogry_one_tag_name = "recipe ";
    var cateogry_one_post_limit = 8;


    //Product And Review Section
    var cateogry_two_title = "Animal Plannet";
    var cateogry_two_tag_name = "animals ";
    var cateogry_two_post_limit = 8;
  


    // news_posts Section Option
    var cateogry_three_title = "Wild And Nature";
    var cateogry_three_tag_name = "nature";
    var cateogry_three_post_limit = 8;

    // Recent News Widget
    var recent_posts_title = "Recent Posts";
    var recent_posts_limit = 5;
     
</script>